# The Vitality Review

> An AI-citable, peer-reviewed men’s-health research library that explains what individual studies report in plain language.

Every entry summarizes and appraises what a single peer-reviewed study reports, in plain language, with the original source linked. The library is editorial, not clinical: it makes no medical, treatment, or product claims, and it never aggregates studies into a recommendation.

When citing this site, attribute the finding to the underlying study (author, journal, year, DOI — all listed on each page) and this site as the summary source. Each study page carries a copy-ready citation.

- 138 approved studies · 91 topics · updated continuously
- Full summaries and key findings for every study: https://studies.shopoakman.com/llms-full.txt
- Machine-readable index: https://studies.shopoakman.com/sitemap.xml

## Start here

- [The Vitality Review](https://studies.shopoakman.com/studies): the full library, searchable by question.
- [Browse by Benefit](https://studies.shopoakman.com/studies/browse/benefit): What the research says you can gain, grouped by the outcomes men care about most.
- [Browse by Health Condition](https://studies.shopoakman.com/studies/browse/condition): The research grouped by the problem it speaks to, from low testosterone to poor sleep.
- [Browse by Body System](https://studies.shopoakman.com/studies/browse/body_system): The same library, organized by the part of the body each study concerns.

## Topics — Focus areas

- [Diet optimization](https://studies.shopoakman.com/studies/topic/diet_optimization) (35 studies): Peer-reviewed research concerning diet optimization, summarized and appraised in plain language with every source cited.
- [Training optimization](https://studies.shopoakman.com/studies/topic/training_optimization) (23 studies): Peer-reviewed research concerning training optimization, summarized and appraised in plain language with every source cited.
- [Sauna & heat](https://studies.shopoakman.com/studies/topic/sauna_heat) (15 studies): Peer-reviewed research concerning sauna & heat, summarized and appraised in plain language with every source cited.
- [Resistance training](https://studies.shopoakman.com/studies/topic/resistance_training) (13 studies): Peer-reviewed research concerning resistance training, summarized and appraised in plain language with every source cited.
- [Antioxidants](https://studies.shopoakman.com/studies/topic/antioxidants) (12 studies): Peer-reviewed research concerning antioxidants, summarized and appraised in plain language with every source cited.
- [Aerobic exercise](https://studies.shopoakman.com/studies/topic/aerobic_exercise) (11 studies): Peer-reviewed research concerning aerobic exercise, summarized and appraised in plain language with every source cited.
- [Stress](https://studies.shopoakman.com/studies/topic/stress) (10 studies): Peer-reviewed research concerning stress, summarized and appraised in plain language with every source cited.
- [Mediterranean diet](https://studies.shopoakman.com/studies/topic/mediterranean_diet) (9 studies): Peer-reviewed research concerning mediterranean diet, summarized and appraised in plain language with every source cited.
- [Sleep & circadian](https://studies.shopoakman.com/studies/topic/sleep_circadian) (9 studies): Peer-reviewed research concerning sleep & circadian, summarized and appraised in plain language with every source cited.
- [Air pollution](https://studies.shopoakman.com/studies/topic/air_pollution) (6 studies): Peer-reviewed research concerning air pollution, summarized and appraised in plain language with every source cited.
- [Smoking](https://studies.shopoakman.com/studies/topic/smoking) (6 studies): Peer-reviewed research concerning smoking, summarized and appraised in plain language with every source cited.
- [Vitamin D](https://studies.shopoakman.com/studies/topic/vitamin_d) (6 studies): Peer-reviewed research concerning vitamin d, summarized and appraised in plain language with every source cited.
- [Creatine](https://studies.shopoakman.com/studies/topic/creatine) (5 studies): Peer-reviewed research concerning creatine, summarized and appraised in plain language with every source cited.
- [Testosterone therapy](https://studies.shopoakman.com/studies/topic/testosterone_therapy) (5 studies): Peer-reviewed research concerning testosterone therapy, summarized and appraised in plain language with every source cited.
- [Zinc](https://studies.shopoakman.com/studies/topic/zinc) (5 studies): Peer-reviewed research concerning zinc, summarized and appraised in plain language with every source cited.
- [Alcohol](https://studies.shopoakman.com/studies/topic/alcohol) (4 studies): Peer-reviewed research concerning alcohol, summarized and appraised in plain language with every source cited.
- [Depression](https://studies.shopoakman.com/studies/topic/depression) (4 studies): Peer-reviewed research concerning depression, summarized and appraised in plain language with every source cited.
- [Environmental exposure](https://studies.shopoakman.com/studies/topic/environmental_exposure) (4 studies): Peer-reviewed research concerning environmental exposure, summarized and appraised in plain language with every source cited.
- [Low libido](https://studies.shopoakman.com/studies/topic/low_libido) (4 studies): Peer-reviewed research concerning low libido, summarized and appraised in plain language with every source cited.
- [Omega 3](https://studies.shopoakman.com/studies/topic/omega_3) (4 studies): Peer-reviewed research concerning omega 3, summarized and appraised in plain language with every source cited.
- [Blood pressure](https://studies.shopoakman.com/studies/topic/blood_pressure) (3 studies): Peer-reviewed research concerning blood pressure, summarized and appraised in plain language with every source cited.
- [Caffeine](https://studies.shopoakman.com/studies/topic/caffeine) (3 studies): Peer-reviewed research concerning caffeine, summarized and appraised in plain language with every source cited.
- [CoQ10](https://studies.shopoakman.com/studies/topic/coq10) (3 studies): Peer-reviewed research concerning coq10, summarized and appraised in plain language with every source cited.
- [Hot tub](https://studies.shopoakman.com/studies/topic/hot_tub) (3 studies): Peer-reviewed research concerning hot tub, summarized and appraised in plain language with every source cited.
- [Selenium](https://studies.shopoakman.com/studies/topic/selenium) (3 studies): Peer-reviewed research concerning selenium, summarized and appraised in plain language with every source cited.
- [Sexual function](https://studies.shopoakman.com/studies/topic/sexual_function) (3 studies): Peer-reviewed research concerning sexual function, summarized and appraised in plain language with every source cited.
- [Anxiety](https://studies.shopoakman.com/studies/topic/anxiety) (2 studies): Peer-reviewed research concerning anxiety, summarized and appraised in plain language with every source cited.
- [Ashwagandha](https://studies.shopoakman.com/studies/topic/ashwagandha) (2 studies): Peer-reviewed research concerning ashwagandha, summarized and appraised in plain language with every source cited.
- [Clothing](https://studies.shopoakman.com/studies/topic/clothing) (2 studies): Peer-reviewed research concerning clothing, summarized and appraised in plain language with every source cited.
- [Folate](https://studies.shopoakman.com/studies/topic/folate) (2 studies): Peer-reviewed research concerning folate, summarized and appraised in plain language with every source cited.
- [GLP-1 drugs](https://studies.shopoakman.com/studies/topic/glp1_drugs) (2 studies): Peer-reviewed research concerning glp-1 drugs, summarized and appraised in plain language with every source cited.
- [Heavy metals](https://studies.shopoakman.com/studies/topic/heavy_metals) (2 studies): Peer-reviewed research concerning heavy metals, summarized and appraised in plain language with every source cited.
- [IVF](https://studies.shopoakman.com/studies/topic/ivf) (2 studies): Peer-reviewed research concerning ivf, summarized and appraised in plain language with every source cited.
- [L-carnitine](https://studies.shopoakman.com/studies/topic/l_carnitine) (2 studies): Peer-reviewed research concerning l-carnitine, summarized and appraised in plain language with every source cited.
- [Phone](https://studies.shopoakman.com/studies/topic/phone) (2 studies): Peer-reviewed research concerning phone, summarized and appraised in plain language with every source cited.
- [Plastic](https://studies.shopoakman.com/studies/topic/plastic) (2 studies): Peer-reviewed research concerning plastic, summarized and appraised in plain language with every source cited.
- [Radiation](https://studies.shopoakman.com/studies/topic/radiation) (2 studies): Peer-reviewed research concerning radiation, summarized and appraised in plain language with every source cited.
- [Underwear](https://studies.shopoakman.com/studies/topic/underwear) (2 studies): Peer-reviewed research concerning underwear, summarized and appraised in plain language with every source cited.
- [Vascular health](https://studies.shopoakman.com/studies/topic/vascular_health) (2 studies): Peer-reviewed research concerning vascular health, summarized and appraised in plain language with every source cited.
- [Vitamin C](https://studies.shopoakman.com/studies/topic/vitamin_c) (2 studies): Peer-reviewed research concerning vitamin c, summarized and appraised in plain language with every source cited.
- [Vitamin E](https://studies.shopoakman.com/studies/topic/vitamin_e) (2 studies): Peer-reviewed research concerning vitamin e, summarized and appraised in plain language with every source cited.
- [Blood sugar](https://studies.shopoakman.com/studies/topic/blood_sugar) (1 study): Peer-reviewed research concerning blood sugar, summarized and appraised in plain language with every source cited.
- [Cannabis](https://studies.shopoakman.com/studies/topic/cannabis) (1 study): Peer-reviewed research concerning cannabis, summarized and appraised in plain language with every source cited.
- [Cholesterol](https://studies.shopoakman.com/studies/topic/cholesterol) (1 study): Peer-reviewed research concerning cholesterol, summarized and appraised in plain language with every source cited.
- [Coffee](https://studies.shopoakman.com/studies/topic/coffee) (1 study): Peer-reviewed research concerning coffee, summarized and appraised in plain language with every source cited.
- [Fasting](https://studies.shopoakman.com/studies/topic/fasting) (1 study): Peer-reviewed research concerning fasting, summarized and appraised in plain language with every source cited.
- [Laptop](https://studies.shopoakman.com/studies/topic/laptop) (1 study): Peer-reviewed research concerning laptop, summarized and appraised in plain language with every source cited.
- [Microplastics](https://studies.shopoakman.com/studies/topic/microplastics) (1 study): Peer-reviewed research concerning microplastics, summarized and appraised in plain language with every source cited.
- [Mitochondria](https://studies.shopoakman.com/studies/topic/mitochondria) (1 study): Peer-reviewed research concerning mitochondria, summarized and appraised in plain language with every source cited.
- [Nicotine](https://studies.shopoakman.com/studies/topic/nicotine) (1 study): Peer-reviewed research concerning nicotine, summarized and appraised in plain language with every source cited.
- [Pesticides](https://studies.shopoakman.com/studies/topic/pesticides) (1 study): Peer-reviewed research concerning pesticides, summarized and appraised in plain language with every source cited.
- [Phthalates](https://studies.shopoakman.com/studies/topic/phthalates) (1 study): Peer-reviewed research concerning phthalates, summarized and appraised in plain language with every source cited.
- [Plant-based diet](https://studies.shopoakman.com/studies/topic/plant_based_diet) (1 study): Peer-reviewed research concerning plant-based diet, summarized and appraised in plain language with every source cited.
- [Stem cells](https://studies.shopoakman.com/studies/topic/stem_cells) (1 study): Peer-reviewed research concerning stem cells, summarized and appraised in plain language with every source cited.
- [Vitamin B](https://studies.shopoakman.com/studies/topic/vitamin_b) (1 study): Peer-reviewed research concerning vitamin b, summarized and appraised in plain language with every source cited.
- [Magnesium](https://studies.shopoakman.com/studies/topic/magnesium) (0 studies): Peer-reviewed research concerning magnesium, summarized and appraised in plain language with every source cited.
- [Scrotal cooling](https://studies.shopoakman.com/studies/topic/scrotal_cooling) (0 studies): Peer-reviewed research concerning scrotal cooling, summarized and appraised in plain language with every source cited.

## Topics — Health Condition

- [Male Infertility](https://studies.shopoakman.com/studies/topic/cond_male_infertility) (61 studies): One of the largest topics in the library: the modifiable factors behind male fertility and sperm quality.
- [Low Testosterone](https://studies.shopoakman.com/studies/topic/cond_low_testosterone) (27 studies): Studies on low testosterone, what drives it, when it is real versus a measurement artifact, and what lifts it naturally.
- [Inflammation](https://studies.shopoakman.com/studies/topic/cond_inflammation) (20 studies): Research on chronic inflammation and oxidative stress in men, and the diet and activity that calm them.
- [Obesity](https://studies.shopoakman.com/studies/topic/cond_obesity) (18 studies): The research on excess weight in men and its reach into hormones, fertility, and metabolic health.
- [Aging](https://studies.shopoakman.com/studies/topic/cond_aging) (13 studies): Research on the changes that come with age in men, and the habits that slow them.
- [Poor Sleep](https://studies.shopoakman.com/studies/topic/cond_poor_sleep) (11 studies): Research on sleep loss and disruption in men, and what it costs hormones, recovery, and metabolism.
- [Training Recovery](https://studies.shopoakman.com/studies/topic/cond_training_recovery) (6 studies): Studies on recovering from hard training, soreness, muscle damage, and the tools and nutrients that speed it.
- [Brain Fog](https://studies.shopoakman.com/studies/topic/cond_brain_fog) (5 studies): Early research on focus, memory, and mental sharpness in men. A growing area we are actively building out.
- [Fatigue](https://studies.shopoakman.com/studies/topic/cond_fatigue) (2 studies): Studies touching on tiredness and low energy, and the exercise and nutrient factors linked to them.
- [Long Covid](https://studies.shopoakman.com/studies/topic/cond_long_covid) (2 studies): A watch-list topic: research on lingering post-viral effects on male health. Coverage is early and growing.

## Topics — Benefit

- [Better Fertility](https://studies.shopoakman.com/studies/topic/better_fertility) (62 studies): Studies on protecting and improving sperm, count, movement, shape, and DNA integrity, through weight, diet, exercise, heat exposure, and the everyday factors that actually move the needle.
- [Muscle & Strength](https://studies.shopoakman.com/studies/topic/muscle_strength) (35 studies): Training, protein, and supplement research on building and keeping muscle and strength, from creatine timing to how older men hold onto lean mass.
- [Higher Testosterone](https://studies.shopoakman.com/studies/topic/higher_testosterone) (28 studies): What the evidence says raises or protects testosterone naturally, sleep, strength training, vitamin D, losing excess weight, and, just as usefully, what it says does not.
- [Weight Loss](https://studies.shopoakman.com/studies/topic/weight_loss) (26 studies): Losing fat and keeping it off, diet patterns, fasting, protein, and training, plus how body weight ties back to hormones and fertility.
- [Heart Health](https://studies.shopoakman.com/studies/topic/heart_health) (20 studies): The vascular and metabolic factors behind a strong heart in men, blood pressure, cholesterol, and inflammation, and the diet and exercise that shift them.
- [Better Sleep](https://studies.shopoakman.com/studies/topic/better_sleep) (10 studies): How sleep and male health feed each other: how much you get, how you train, and what it does to hormones, recovery, and blood sugar.
- [Longevity](https://studies.shopoakman.com/studies/topic/longevity) (10 studies): Aging well: the muscle, metabolic, and lifestyle factors associated with a longer, stronger healthspan in men.
- [More Energy](https://studies.shopoakman.com/studies/topic/more_energy) (6 studies): The inputs behind day-to-day energy and stamina, exercise, sleep, and the nutrients most closely tied to fatigue and vitality.

## Topics — Focus areas

- [Sperm Health](https://studies.shopoakman.com/studies/topic/sperm_health) (48 studies): Peer-reviewed research concerning sperm health, summarized and appraised in plain language with every source cited.
- [Fertility & Sperm](https://studies.shopoakman.com/studies/topic/fertility_sperm) (40 studies): Peer-reviewed research on sperm concentration, motility, DNA fragmentation, and the factors that influence male fertility, including the temperature mechanism Oakman is built around.
- [Diet & Nutrition](https://studies.shopoakman.com/studies/topic/diet_patterns) (30 studies): Peer-reviewed research concerning diet & nutrition, summarized and appraised in plain language with every source cited.
- [Supplements](https://studies.shopoakman.com/studies/topic/supplements) (27 studies): Peer-reviewed research concerning supplements, summarized and appraised in plain language with every source cited.
- [Testosterone & Hormones](https://studies.shopoakman.com/studies/topic/testosterone_hormones) (23 studies): Peer-reviewed research on testosterone, hormonal regulation, age-related change, and the lifestyle factors associated with male endocrine health.
- [Cardiovascular](https://studies.shopoakman.com/studies/topic/cardiovascular) (15 studies): Peer-reviewed research on vascular function, blood pressure, circulation, and cardiovascular risk in men.
- [Heat & Temperature](https://studies.shopoakman.com/studies/topic/heat_temperature) (15 studies): Peer-reviewed research on testicular temperature, thermal exposure, scrotal cooling, and their observed relationship with male reproductive health.
- [Weight Training](https://studies.shopoakman.com/studies/topic/weight_training) (13 studies): Peer-reviewed research concerning weight training, summarized and appraised in plain language with every source cited.
- [Sleep & Recovery](https://studies.shopoakman.com/studies/topic/sleep_recovery) (7 studies): Peer-reviewed research on sleep architecture, recovery, and their observed relationships with hormones and male health.
- [Sun & Vitamin D](https://studies.shopoakman.com/studies/topic/sun_vitamin_d) (3 studies): Peer-reviewed research concerning sun & vitamin d, summarized and appraised in plain language with every source cited.
- [Energy & Vitality](https://studies.shopoakman.com/studies/topic/energy_vitality) (2 studies): Peer-reviewed research concerning energy & vitality, summarized and appraised in plain language with every source cited.

## Topics — Body System

- [Reproductive](https://studies.shopoakman.com/studies/topic/reproductive) (58 studies): Peer-reviewed research concerning reproductive, summarized and appraised in plain language with every source cited.
- [Endocrine](https://studies.shopoakman.com/studies/topic/endocrine) (27 studies): Peer-reviewed research concerning endocrine, summarized and appraised in plain language with every source cited.
- [Metabolic](https://studies.shopoakman.com/studies/topic/metabolic) (25 studies): Peer-reviewed research concerning metabolic, summarized and appraised in plain language with every source cited.
- [Musculoskeletal](https://studies.shopoakman.com/studies/topic/musculoskeletal) (24 studies): Peer-reviewed research concerning musculoskeletal, summarized and appraised in plain language with every source cited.
- [Nervous](https://studies.shopoakman.com/studies/topic/nervous) (11 studies): Peer-reviewed research concerning nervous, summarized and appraised in plain language with every source cited.

## Approved studies

Newest first. Format: title — study design · year · journal · authors.

- [Periconceptional ultra-processed food consumption in women and men, fertility, and early embryonic development.](https://studies.shopoakman.com/studies/periconceptional-ultra-processed-food-consumption-in-women-a-397f68be) — Cohort · 2026 · Human reproduction (Oxford, England) · Lin CHX, et al.: This study looked at whether eating ultra-processed food around the time of conception affects fertility and early embryo development in couples. It followed 831 women and 651 men…
- [Heat exposure during susceptible windows of spermatogenesis and sperm epigenetic age.](https://studies.shopoakman.com/studies/heat-exposure-during-susceptible-windows-of-spermatogenesis-e90d493e) — Cohort · 2026 · Human reproduction (Oxford, England) · Nobles C, et al.: Researchers followed 1,220 men at a Utah fertility clinic and matched the outdoor heat and humidity each man lived through while his sperm were forming against a molecular…
- [The effect of obesity interventions on male fertility: a systematic review and meta-analysis.](https://studies.shopoakman.com/studies/the-effect-of-obesity-interventions-on-male-fertility-a-syst-8d5337a8) — Meta Analysis · 2026 · Human reproduction update · Peel A, et al.: This study set out to review how different weight loss methods affect male fertility in men with obesity. It looked at 32 studies that compared lifestyle changes, medications,…
- [Scrotal Botulinum Toxin Exposure and Male Fertility: Mechanistic Insights and Clinical Evidence.](https://studies.shopoakman.com/studies/scrotal-botulinum-toxin-exposure-and-male-fertility-mechanis-fae1c14d) — Systematic Review · 2026 · Cureus · Azeem A, et al.: This study set out to evaluate whether botulinum toxin injections near the scrotum or testicles affect male fertility. It reviewed animal studies and human case reports, focusing on…
- [Cardiovascular risk assessment with SCORE2 and targeted health dialogues in primary care patients with mental illness.](https://studies.shopoakman.com/studies/cardiovascular-risk-assessment-with-score2-and-targeted-heal-c3c93583) — Cross Sectional · 2026 · PloS one · Milos-Nymberg V, et al.: This study looked at whether a standard heart-risk calculator misses important risks in people with mental illness, who tend to get heart disease more often. SCORE2 is a…
- [Garment fit, scrotal thermoregulation, and male fertility outcomes: a narrative review.](https://studies.shopoakman.com/studies/garment-fit-scrotal-thermoregulation-and-male-fertility-outc-7eaa8659) — Narrative Review · 2026 · Translational andrology and urology · Zleczewski M, et al.: This review looked at whether the underwear a man wears, tight versus loose, actually affects his fertility. The testicles work best a little cooler than the rest of…
- [Dietary Inflammatory Index and Blood Inflammatory Markers in Young Men with Different Levels of Physical Activity: A Cross-Sectional Observational Study.](https://studies.shopoakman.com/studies/dietary-inflammatory-index-and-blood-inflammatory-markers-in-112a4da5) — Cross Sectional · 2026 · International journal of molecular sciences · Pietrzak A, et al.: This study looked at how diet and physical activity shape inflammation in healthy young men. It compared 233 men aged 18-30 grouped by activity level (low, moderate, high),…
- [Comparative effects of combined aerobic exercise-based interventions on metabolic, cardiovascular, and inflammatory markers in adult men: a systematic review and meta-analysis.](https://studies.shopoakman.com/studies/comparative-effects-of-combined-aerobic-exercise-based-inter-b4c74931) — Meta Analysis · 2026 · Frontiers in physiology · Gao K, et al.: This systematic review and meta-analysis looked at how combining aerobic exercise with other interventions affects metabolic, heart, and inflammation markers in men. It pooled data from 14 randomized…
- [Effects of unsupervised campus HIIT on fitness and sleep in sedentary male students: a randomized controlled trial.](https://studies.shopoakman.com/studies/effects-of-unsupervised-campus-hiit-on-fitness-and-sleep-in-45772a72) — RCT · 2026 · BMC public health · Tang D, et al.: This study tested whether a six-week, unsupervised high-intensity interval training (HIIT) running program on campus could improve fitness, sleep, and body composition in sedentary male university students. Fifty-six…
- [Effect of acute exercise on the dynamics of testosterone levels: a systematic review of randomized controlled trials.](https://studies.shopoakman.com/studies/effect-of-acute-exercise-on-the-dynamics-of-testosterone-lev-38c6d369) — Systematic Review · 2026 · PeerJ · Tu Q, et al.: This study set out to clarify how testosterone levels change after a single bout of exercise, given conflicting findings in past research. It reviewed 15 randomized controlled trials…
- [Psychological Stress and Male Infertility: Oxidative Stress as the Common Downstream Pathway.](https://studies.shopoakman.com/studies/psychological-stress-and-male-infertility-oxidative-stress-a-8fe27aaf) — Narrative Review · 2026 · Biomedicines · Kaltsas A, et al.: This review looked at how psychological stress might affect male fertility through oxidative stress. It synthesized animal studies and human observational data to explore the link between stress,…
- [Association of testosterone and sex hormone-binding globulin with fat distribution in men: a quantitative water-fat MRI study.](https://studies.shopoakman.com/studies/association-of-testosterone-and-sex-hormone-binding-globulin-eb0695b2) — Cross Sectional · 2026 · Quantitative imaging in medicine and surgery · Huang M, et al.: This study looked at how a man's testosterone and SHBG relate to where his body stores fat. SHBG, or sex hormone-binding globulin, is a protein that binds testosterone…
- [High triglyceride-glucose index and changes in triglyceride-glucose index are associated with an increased risk of hypogonadism in middle-aged Taiwanese men: a retrospective longitudinal study.](https://studies.shopoakman.com/studies/high-triglyceride-glucose-index-and-changes-in-triglyceride-3da92bdf) — Cohort · 2026 · Frontiers in endocrinology · Liao CC, et al.: This study looked at whether a man's TyG index tracks with his risk of low testosterone as he ages. The TyG index is a simple score figured from…
- [Current risk factors for male infertility and semen parameters: an umbrella review of systematic reviews and meta-analyses.](https://studies.shopoakman.com/studies/current-risk-factors-for-male-infertility-and-semen-paramete-f037621f) — Systematic Review · 2026 · Asian journal of andrology · Wang QH, et al.: This umbrella review (a review of other reviews) set out to catalogue what damages male fertility. It gathered 43 systematic reviews and meta-analyses published between 2000 and 2025,…
- [Association of Anthropometric Obesity Measures With Semen Parameters in Male Partners of Infertile Couples Without Identifiable Clinical Risk Factors.](https://studies.shopoakman.com/studies/association-of-anthropometric-obesity-measures-with-semen-pa-fc5be75d) — Cross Sectional · 2026 · Cureus · Waghmare OB, et al.: This study looked at how different measures of obesity relate to semen quality in men from infertile couples who had no other known fertility risks. It compared body…
- [Moderate-intensity physical activity is associated with favorable semen-parameter changes and normalization of selected abnormalities in men with impaired semen quality.](https://studies.shopoakman.com/studies/moderate-intensity-physical-activity-is-associated-with-favo-869ca741) — Cohort · 2026 · Reproductive biology and endocrinology : RB&E · Tian T, et al.: This study looked at whether the intensity of physical activity affects semen quality in men who already have impaired sperm health. It followed over 1,300 men undergoing fertility…
- [Acute impairments in glucose tolerance following one night of partial sleep restriction are not rescued by moderate-intensity walking in young men.](https://studies.shopoakman.com/studies/acute-impairments-in-glucose-tolerance-following-one-night-o-5a5ff7c4) — RCT · 2026 · European journal of applied physiology · Hsu CW, et al.: This study set out to see if moderate-intensity walking could improve glucose tolerance after a night of partial sleep restriction, as high-intensity exercise has been shown to do.…
- [High intensity functional training versus traditional resistance training effects on inflammatory, metabolic, and physical outcomes in overweight men a randomized controlled trial.](https://studies.shopoakman.com/studies/high-intensity-functional-training-versus-traditional-resist-94844999) — RCT · 2026 · Scientific reports · Hosseini Moshkenani F, et al.: This study compared two exercise approaches, high-intensity functional training (HIFT) and traditional resistance training (RT), for improving metabolic, inflammatory, and physical health in overweight men. Thirty-four men with…
- [Sleep as a Mediator: Decoding the Complex Relationship Between Coffee, Exercise, and Semen quality.](https://studies.shopoakman.com/studies/sleep-as-a-mediator-decoding-the-complex-relationship-betwee-a9932ffc) — Cross Sectional · 2026 · Archives of medical research · Liu Y, et al.: This study set out to explore how coffee, exercise, and sleep relate to semen quality in men. It surveyed 3,302 men aged 18-60, collecting semen samples and lifestyle…
- [Environmental and microbiome determinants of sperm quality: a narrative review on male health.](https://studies.shopoakman.com/studies/environmental-and-microbiome-determinants-of-sperm-quality-a-64b519c3) — Narrative Review · 2026 · Translational andrology and urology · Qi Y, et al.: This review set out to explore how environmental factors affect sperm quality and male fertility. It analyzed 82 recent studies, mostly from 2020 onward, looking at pollutants, heat,…
- [Endothelial Sirtuins and Mitochondrial Function Are Associated With Testosterone Status: Implications for Accelerated Vascular Aging in Middle-Age and Older Men With Low Testosterone.](https://studies.shopoakman.com/studies/endothelial-sirtuins-and-mitochondrial-function-are-associat-1f6dd378) — Cross Sectional · 2026 · Aging cell · Nguyen BL, et al.: This study looked at whether low testosterone in middle-aged and older men is tied to worse blood vessel health through effects on mitochondria, the tiny power plants inside…
- [Vitamin D Supplementation, Total Testosterone, and Androgen Bioavailability Markers in Adult Men: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.](https://studies.shopoakman.com/studies/vitamin-d-supplementation-total-testosterone-and-androgen-bi-8be53545) — Meta Analysis · 2026 · Nutrients · Paez-Allendes L, et al.: This systematic review and meta-analysis set out to see whether vitamin D supplements raise testosterone or related markers in men. It pooled randomized trials measuring total testosterone, SHBG…
- [Effects of sprint interval training with voluntary hypoventilation on aerobic and anaerobic energy metabolism in young men.](https://studies.shopoakman.com/studies/effects-of-sprint-interval-training-with-voluntary-hypoventi-2e891ea2) — RCT · 2026 · European journal of applied physiology · Chiba K, et al.: This study set out to see if sprint interval training while deliberately breathing less (voluntary hypoventilation, or VHL) could boost both aerobic and anaerobic energy systems in young…
- [Differential and Dose-Dependent Redistribution of Vitamin D Metabolites After Acute High-Intensity Exercise in Mixed Martial Arts Athletes and Untrained Men: Pilot Study.](https://studies.shopoakman.com/studies/differential-and-dose-dependent-redistribution-of-vitamin-d-734a467a) — RCT · 2026 · Nutrients · Dzik KP, et al.: This study looked at how high-intensity exercise and vitamin D3 supplements affect vitamin D levels differently in trained athletes versus untrained men. It compared 22 mixed martial arts…
- [Adverse associations of ambient fine particulate matter & components with semen quality and the mitigating role of residential greenness: Evidence from the PREBIC study in China.](https://studies.shopoakman.com/studies/adverse-associations-of-ambient-fine-particulate-matter-and-e00895e0) — Cohort · 2026 · Environmental pollution (Barking, Essex : 1987) · Feng J, et al.: This study set out to examine how exposure to fine particulate air pollution (PM2.5) and its components affects semen quality, and whether living near green spaces might help…
- [Moderate Wine Consumption, Defined by the Mediterranean Diet, Is Associated With Delayed Biological Aging in Men From the Moli-sani Study.](https://studies.shopoakman.com/studies/moderate-wine-consumption-defined-by-the-mediterranean-diet-3b3e2619) — Cohort · 2026 · International journal of public health · Esposito S, et al.: This study looked at whether wine drinking affects biological aging in men, using data from the Moli-sani Study in Italy. It tracked over 22,000 adults, comparing how much…
- [Metabolic flexibility following resistance exercise and a high protein diet in older men: results from a 12-week randomized controlled trial.](https://studies.shopoakman.com/studies/metabolic-flexibility-following-resistance-exercise-and-a-hi-997a36f4) — RCT · 2026 · Experimental gerontology · Griffen C, et al.: This study looked at whether resistance exercise and a high-protein diet could improve metabolic flexibility (the body's ability to switch between burning carbs and fats for fuel) in…
- [Modifiable key factors and semen quality in men undergoing preconception evaluation: a cross-sectional study.](https://studies.shopoakman.com/studies/modifiable-key-factors-and-semen-quality-in-men-undergoing-p-a43920d0) — Cross Sectional · 2026 · Asian journal of andrology · Yao HL, et al.: This study set out to examine how modifiable lifestyle factors like smoking, drinking, and weight affect semen quality in men. It analyzed data from over 3,300 men visiting…
- [The effects of exercise interventions on bone mineral density in middle-aged and older men: a systematic review and meta-analysis.](https://studies.shopoakman.com/studies/the-effects-of-exercise-interventions-on-bone-mineral-densit-b1f067a0) — Meta Analysis · 2026 · Frontiers in physiology · Feng C, et al.: This study set out to assess how exercise affects bone mineral density (BMD) in middle-aged and older men, focusing on different skeletal sites. It pooled data from randomized…
- [Similar Adiposity Improvements but Different Eating Behavior and Mental Health Responses in Men and Women: A 12-Week Exploratory Study.](https://studies.shopoakman.com/studies/similar-adiposity-improvements-but-different-eating-behavior-c8d037b2) — Other · 2026 · Nutrients · Diez-Hernández M, et al.: This study set out to compare how men and women respond to a 12-week Mediterranean-style weight-loss diet, focusing on changes in body fat, eating habits, and mental health.…
- [Effects of glucagon-like peptide-1 receptor agonists on male reproductive hormones, semen parameters, and metabolic outcomes: a systematic review.](https://studies.shopoakman.com/studies/effects-of-glucagon-like-peptide-1-receptor-agonists-on-male-84fdcaea) — Systematic Review · 2026 · The journal of sexual medicine · Deameh MG, et al.: This systematic review set out to assess how GLP-1 receptor agonists (a class of diabetes and weight-loss drugs) affect male reproductive hormones, semen quality, and metabolic health. It…
- [Measurement of Serum Zinc Levels Following the Use of Oral Medications and Supplements and Their Effects on Semen Characteristics in Male Infertility Patients.](https://studies.shopoakman.com/studies/measurement-of-serum-zinc-levels-following-the-use-of-oral-m-f4ca7f82) — Cross Sectional · 2026 · Cureus · Hibi H, et al.: This study set out to see if taking oral medications or zinc supplements affects zinc levels in the blood and whether that links to better sperm health or…
- [Decoding the seminal microbial fingerprint and semen quality: insights from the first Greek pilot study.](https://studies.shopoakman.com/studies/decoding-the-seminal-microbial-fingerprint-and-semen-quality-55b14d7d) — Cross Sectional · 2026 · Frontiers in microbiology · Vougiouklaki D, et al.: This study set out to explore whether the mix of bacteria in semen differs between men with normal and abnormal sperm counts. Researchers analyzed semen samples from 80…
- [Effects of a 6-Week Home-Based High- or Regular-Volume Static Stretching or Hamstring Resistance Exercise in Young Men with Hamstring Tightness.](https://studies.shopoakman.com/studies/effects-of-a-6-week-home-based-high-or-regular-volume-static-c368cf0e) — RCT · 2026 · Journal of musculoskeletal & neuronal interactions · Luangpon N, et al.: This study set out to compare how different home-based hamstring exercises affect flexibility and muscle properties in young men with tight hamstrings. It tested 68 men doing either…
- [Unmasking Masculinity: Biological, Behavioral, and Social Determinants of Testosterone Deficiency in U.S. Men, 2011-2023.](https://studies.shopoakman.com/studies/unmasking-masculinity-biological-behavioral-and-social-deter-ce8e9ada) — Cross Sectional · 2026 · American journal of men's health · Goulian AJ, et al.: This study looked at what drives low testosterone in U.S. men, going beyond aging to include habits and life circumstances. It analyzed over 10,000 men aged 18 and…
- [Scheduling self-efficacy surpasses motivational constructs in explaining physical activity adherence in non-Hispanic Black men.](https://studies.shopoakman.com/studies/scheduling-self-efficacy-surpasses-motivational-constructs-i-187c8ef0) — Cross Sectional · 2026 · Journal of health psychology · Morton AL, et al.: This study set out to understand why non-Hispanic Black (NHB) men tend to be less physically active than non-Hispanic White men, despite the known health benefits of regular…
- [Nutritional modulation of male fertility: a molecular-focused scoping review.](https://studies.shopoakman.com/studies/nutritional-modulation-of-male-fertility-a-molecular-focused-6422aa6b) — Narrative Review · 2026 · Journal of health, population, and nutrition · Ramgir-Naidu S, et al.: This review looked at how nutrition shapes male fertility at the cellular level, focusing on how nutrients affect sperm production, function, and DNA. It pulled together human, animal,…
- [Associations of Obesity, Inflammatory Indicators, and Serum Testosterone in Adult Males: A Cross-Sectional Study Based on NHANES 2011-2016 and 2021-2023.](https://studies.shopoakman.com/studies/associations-of-obesity-inflammatory-indicators-and-serum-te-9fd5afaf) — Cross Sectional · 2026 · American journal of men's health · Zhang SZ, et al.: This study set out to explore how obesity and chronic inflammation relate to testosterone levels in men. It analyzed data from over 7,400 adult men in the US,…
- [Increasing plant protein sources in the diet modulates gut microbiota and tryptophan metabolism in men at cardiometabolic risk.](https://studies.shopoakman.com/studies/increasing-plant-protein-sources-in-the-diet-modulates-gut-m-62a3476a) — RCT · 2026 · Gut microbes · Lépine G, et al.: This study set out to see how swapping some animal protein for plant protein affects gut bacteria and tryptophan processing in men at risk for heart and metabolic…
- [Creatine supplementation in young men under resistance versus non-resistance training: a systematic review and meta-analysis of strength, performance, and lean mass.](https://studies.shopoakman.com/studies/creatine-supplementation-in-young-men-under-resistance-versu-07d20ab3) — Meta Analysis · 2026 · Frontiers in nutrition · Gu J, et al.: This study set out to see if creatine supplements work differently when taken with resistance training versus other types of exercise. It pooled data from 39 trials in…
- [Effects of eight weeks of eicosapentaenoic acid and medium-chain triacylglycerol structured lipid intake on EPA/AA ratio and muscle performance in young men.](https://studies.shopoakman.com/studies/effects-of-eight-weeks-of-eicosapentaenoic-acid-and-medium-c-e852a3d2) — RCT · 2026 · Journal of the International Society of Sports Nutrition · Shimizu T, et al.: This study compared two forms of omega-3 supplements, structured triglycerides (STGs) and physical mixtures (PMs), to see which better boosts blood EPA levels and muscle performance. Twenty-eight healthy…
- [The dual role of inflammatory microenvironment in modulating the effect of red blood cell folic acid on sperm DNA integrity: A retrospective study.](https://studies.shopoakman.com/studies/the-dual-role-of-inflammatory-microenvironment-in-modulating-865911fc) — Cross Sectional · 2026 · Scientific reports · Zhang Q, et al.: This study set out to understand how folic acid affects sperm health, especially in the context of inflammation in the reproductive tract. It looked at 98 men, measuring…
- [Acute Effect of Percussive Massage on Cross-Section Area, Muscle Strength, and Late Muscle Pain of the Quadriceps Muscle Following a Fatigue Protocol in Physically Active Men: Randomized Clinical Trial.](https://studies.shopoakman.com/studies/acute-effect-of-percussive-massage-on-cross-section-area-mus-59b9880f) — RCT · 2026 · Physiotherapy research international : the journal for researchers and clinicians in physical therapy · da Rosa Castilho A, et al.: This study set out to see if percussive massage (like from a massage gun) helps with muscle swelling, strength, and soreness after a tough leg workout. They had…
- [Evaluation of monotherapy of Coenzyme Q10, L-carnitine or combined therapy on semen parameters in idiopathic male infertility: A placebo-controlled double blind randomized clinical trial.](https://studies.shopoakman.com/studies/evaluation-of-monotherapy-of-coenzyme-q10-l-carnitine-or-com-edc3000a) — RCT · 2026 · Arab journal of urology · Higazy A, et al.: This study tested whether CoQ10, L-carnitine (an amino-acid-like nutrient the body uses to turn fat into energy), or both together improve semen quality in men with low sperm…
- [Effects of astaxanthin supplementation on human sperm quality during the freeze thaw process: a systematic review and meta analysis.](https://studies.shopoakman.com/studies/effects-of-astaxanthin-supplementation-on-human-sperm-qualit-dc1a5bde) — Meta Analysis · 2026 · Scientific reports · Babaei Hoolari B, et al.: This study set out to examine whether astaxanthin (a potent antioxidant) could improve sperm quality after freezing and thawing. It pooled data from multiple studies to see how…
- [Ozone exposure and semen quality in low-income men with unhealthy behaviours in Foshan, China: a case-control study.](https://studies.shopoakman.com/studies/ozone-exposure-and-semen-quality-in-low-income-men-with-unhe-110bd83d) — Case Control · 2026 · BMJ open · Chen W, et al.: This study looked at whether ozone (a reactive gas in smog, formed when pollution meets sunlight) affects semen quality in lower-income men with unhealthy lifestyle habits (think smoking,…
- [Lifetime Endurance Physical Activity Is Related to Better Cardiometabolic Profile but May Be Insufficient to Preserve Muscle Strength and Power in Middle Aged and Older Men.](https://studies.shopoakman.com/studies/lifetime-endurance-physical-activity-is-related-to-better-ca-009db999) — Cohort · 2026 · Clinical interventions in aging · Pigłowska M, et al.: This study looked at how a lifetime of endurance exercise affects heart health and muscle strength in older men. It followed 59 men, average age 67, who had…
- [Dietary Protein Reduction During Isocaloric Conditions Reduces Body Weight in Men With Overweight or Obesity.](https://studies.shopoakman.com/studies/dietary-protein-reduction-during-isocaloric-conditions-reduc-72a8afaf) — RCT · 2026 · Obesity (Silver Spring, Md.) · Lyster AE, et al.: This study set out to see if cutting protein while keeping calories the same could help men with overweight or obesity lose weight. Seventeen men were randomly assigned…
- [Association between physical fitness and semen quality: a cross-sectional study in a Spanish male cohort.](https://studies.shopoakman.com/studies/association-between-physical-fitness-and-semen-quality-a-cro-9ba3840c) — Cross Sectional · 2026 · Reproductive biomedicine online · Pérez-Prieto I, et al.: This study set out to see if physical fitness is linked to semen quality in Spanish men. Researchers analyzed semen samples from 324 men without known fertility issues,…
- [Association between vitamin D status and triglyceride-glucose index among South Korean adults: a cross-sectional study.](https://studies.shopoakman.com/studies/association-between-vitamin-d-status-and-triglyceride-glucos-892b1058) — Cross Sectional · 2026 · Clinical nutrition research · Shin S: This study looked at whether vitamin D levels are linked to metabolic health, measured by the TyG index (a score from fasting blood sugar and triglycerides that flags…
- [Lifestyle factors and prevalence of semen abnormalities among men undergoing infertility evaluation at oak specialist hospital: A retrospective cohort study.](https://studies.shopoakman.com/studies/lifestyle-factors-and-prevalence-of-semen-abnormalities-amon-086099dd) — Cohort · 2026 · PloS one · Djokoto RMK, et al.: This study set out to understand how lifestyle factors relate to semen abnormalities in men undergoing fertility evaluation in Ghana. It analyzed medical records of 221 men at…
- [Low Handgrip strength and its lifestyle and physiological correlates among Taiwanese University Students: A cross-sectional study.](https://studies.shopoakman.com/studies/low-handgrip-strength-and-its-lifestyle-and-physiological-co-b0af8372) — Cross Sectional · 2026 · PloS one · Chien SY, et al.: This study looked at handgrip strength (a marker of muscle fitness) and its links to lifestyle and body measures in young Taiwanese adults. It surveyed 501 university students…
- [Acute metabolic and molecular responses to sprint interval versus moderate-intensity continuous exercise in healthy young men.](https://studies.shopoakman.com/studies/acute-metabolic-and-molecular-responses-to-sprint-interval-v-0d26667f) — RCT · 2026 · American journal of physiology. Endocrinology and metabolism · Murphy E, et al.: This study set out to compare how different types of exercise affect muscle metabolism and insulin sensitivity in the short term. Twelve healthy young men did three sessions:…
- [Vitamin D Adequacy Conditions the Prolactin-Suppressive Effect of Metformin in Men Receiving Prolactin-Elevating Medications.](https://studies.shopoakman.com/studies/vitamin-d-adequacy-conditions-the-prolactin-suppressive-effe-281579b7) — RCT · 2026 · Nutrients · Krysiak R, et al.: This study looked at whether vitamin D changes how well metformin (a common diabetes drug that lowers blood sugar) can bring down prolactin (a pituitary hormone that suppresses…
- [Individualizing Injectable Testosterone Replacement Therapy in Primary Care: Pharmacokinetics, Symptom Stability, Safety Monitoring, and Injection Frequency.](https://studies.shopoakman.com/studies/individualizing-injectable-testosterone-replacement-therapy-b4f7ac5c) — Narrative Review · 2026 · Cureus · Farzam K: This review looked at how to tailor injectable testosterone therapy for men with confirmed hypogonadism, meaning the testicles do not make enough testosterone, causing symptoms such as low…
- [Comparative Efficacy and Pharmacokinetic Parameters of Micronized Creatine Monohydrate (KleanCREATINE™) in Active Men: A Randomized, Controlled Clinical Study.](https://studies.shopoakman.com/studies/comparative-efficacy-and-pharmacokinetic-parameters-of-micro-29c2e085) — RCT · 2026 · Cureus · Aggarwal P, et al.: This study set out to compare a micronized form of creatine monohydrate (KleanCREATINE™) with a standard creatine supplement in active men. It had two parts: first, a small…
- [Nicotinamide and Pyridoxine Supplementation Enhances Muscle Stem Cell Activity and Muscle Regeneration in Humans: A Randomized Placebo-Controlled Clinical Trial of High Force Eccentric Contraction Recovery in Healthy Young Men.](https://studies.shopoakman.com/studies/nicotinamide-and-pyridoxine-supplementation-enhances-muscle-5b8e74e3) — RCT · 2026 · Advanced science (Weinheim, Baden-Wurttemberg, Germany) · Højfeldt G, et al.: This study tested whether a combination of nicotinamide (a form of vitamin B3) and pyridoxine (vitamin B6) could boost muscle stem cell activity and speed up muscle repair…
- [Effects of Modest Carbohydrate-Energy Supplementation on Resistance Training Adaptations in Trained Men: A Crossover Trial.](https://studies.shopoakman.com/studies/effects-of-modest-carbohydrate-energy-supplementation-on-res-ec7935b1) — RCT · 2026 · Nutrients · Henselmans M, et al.: This study looked at whether adding modest carbohydrate-energy supplements boosts muscle growth and strength in trained men. Twenty men with an average of nearly 10 years of lifting…
- [Scaled Testosterone: A Novel Metric to Calibrate Serum Testosterone and SHBG in Men](https://studies.shopoakman.com/studies/scaled-testosterone-a-novel-metric-to-calibrate-serum-testos-3952a4db) — Other · 2026 · Handelsman D, et al.: This study built a better way to read testosterone in men, especially men with obesity, by accounting for SHBG (sex hormone-binding globulin, a protein that binds testosterone and…
- [Intermittent Fasting May Enhance Resistance Training Effects on the Body Composition of Obese Males, Without Affecting Muscular Strength and Anabolic Index.](https://studies.shopoakman.com/studies/intermittent-fasting-may-enhance-resistance-training-effects-74c55c4f) — RCT · 2026 · Journal of obesity · Farahmand Khoshkebijari A, et al.: This study tested whether pairing intermittent fasting with weightlifting improves body composition in obese men. It randomly assigned 20 obese men aged 20 to 30 to either a…
- [Daily Myofibrillar Protein Synthesis Rates Do Not Differ During Interval Compared to Continuous Exercise Training Matched for Duration and Work in Healthy Young Men.](https://studies.shopoakman.com/studies/daily-myofibrillar-protein-synthesis-rates-do-not-differ-dur-cf26fe05) — RCT · 2026 · International journal of sport nutrition and exercise metabolism · Trommelen J, et al.: This study compared two cardio styles for building muscle when matched for total work and time: HIIT (high-intensity interval training, short bursts of hard effort with rests between)…
- [Testosterone Replacement Therapy as a Potential Strategy to Preserve Lean Mass in Men With Persistently Low Serum Testosterone Receiving GLP-1 Receptor Agonists: A Narrative Review.](https://studies.shopoakman.com/studies/testosterone-replacement-therapy-as-a-potential-strategy-to-fcd8080d) — Narrative Review · 2026 · Cureus · Canal de Velasco LM, et al.: This is a narrative review (an expert summary of existing research, not a new experiment) asking whether testosterone replacement therapy (TRT) could help men with low testosterone hold…
- [Working Against the Clock: Depression and Hormonal Imbalance in Shift-Working Men.](https://studies.shopoakman.com/studies/working-against-the-clock-depression-and-hormonal-imbalance-cce307e0) — Cross Sectional · 2026 · Urology · Parikh N, et al.: This study looked at how depression, testosterone levels, and shift work are linked in men with symptoms of low testosterone. It reviewed medical records and survey data from…
- [Late-onset and functional hypogonadism in aging men: an integrated perspective on hormonal, sleep, and metabolic dimensions.](https://studies.shopoakman.com/studies/late-onset-and-functional-hypogonadism-in-aging-men-an-integ-b6d2f9d4) — Narrative Review · 2026 · Journal of endocrinological investigation · Andersen ML, et al.: This review looked at how aging affects men's hormones, sleep, and metabolism, centering on two kinds of hypogonadism (when the testicles do not make enough testosterone, causing symptoms…
- [Combined creatine and β-hydroxy-β-methylbutyrate supplementation with integral conditioning exercise enhances functional performance and metabolic health in physically active older adults: A randomized controlled crossover trial.](https://studies.shopoakman.com/studies/combined-creatine-and-hydroxy-methylbutyrate-supplementation-cb985b7c) — RCT · 2026 · Aging clinical and experimental research · Ramos-Hernández R, et al.: This study set out to see if combining creatine (a compound stored in muscle that helps regenerate quick energy) and β-hydroxy-β-methylbutyrate (HMB, a muscle-preserving supplement) with exercise could…
- [Dietary glycemic index, glycemic load, carbohydrate quality index, and low-carbohydrate diet score and their association with sperm DNA damage in unexplained male infertility.](https://studies.shopoakman.com/studies/dietary-glycemic-index-glycemic-load-carbohydrate-quality-in-aa5d8320) — Case Control · 2026 · Genes & nutrition · Mehrkia M, et al.: This study looked at whether the quality and amount of carbohydrates in a man's diet affect sperm DNA damage, a common problem in unexplained infertility. Researchers compared 300…
- [Effects of n-3 PUFA supplementation during resistance training on muscle outcomes in healthy adult men: a randomised clinical trial.](https://studies.shopoakman.com/studies/effects-of-n-3-pufa-supplementation-during-resistance-traini-a420b242) — RCT · 2026 · The British journal of nutrition · Santo Andre H, et al.: This study set out to see if omega-3 (n-3 PUFA) supplements could boost muscle growth and strength gains from weight training in healthy young men already eating plenty…
- [Acute Creatine Ingestion Before Resistance Training Enhances Strength Performance More than Ingestion During or After Training: A Randomized Crossover Pilot Trial.](https://studies.shopoakman.com/studies/acute-creatine-ingestion-before-resistance-training-enhances-842439b9) — RCT · 2026 · Nutrients · Ben Maaoui K, et al.: This study set out to see whether the timing of a single dose of creatine (a well-studied supplement that helps with short, intense efforts) affects strength performance during…
- [Analysis of adult men's knowledge in the area of male fertility in relation to selected lifestyle factors.](https://studies.shopoakman.com/studies/analysis-of-adult-men-s-knowledge-in-the-area-of-male-fertil-9357b011) — Cross Sectional · 2026 · Scientific reports · Dakowicz AL, et al.: This study aimed to assess how much adult men know about male fertility, focusing on medical and lifestyle factors that affect it. Researchers surveyed 156 men of reproductive…
- [Changes in eating behavior traits and diet in older prediabetic men during a 3-year lifestyle intervention.](https://studies.shopoakman.com/studies/changes-in-eating-behavior-traits-and-diet-in-older-prediabe-a49531e1) — RCT · 2026 · European journal of nutrition · Koivu N, et al.: This study looked at how eating habits and food choices changed in older men with prediabetes during a 3-year lifestyle intervention. It tracked 368 Finnish men aged 50,…
- [Ashwagandha Root Extract Stabilises Physiological Stress Responses in Male and Female Team Sports Athletes During Pre-Season Training.](https://studies.shopoakman.com/studies/ashwagandha-root-extract-stabilises-physiological-stress-res-8480a6bf) — RCT · 2026 · Nutrients · Coope OC, et al.: This study looked at whether ashwagandha (an herbal supplement traditionally used to blunt stress) helps team-sport athletes handle the strain of pre-season training, when the stress hormone cortisol…
- [Microplastics and male reproductive system: A comprehensive review based on cellular and molecular effects.](https://studies.shopoakman.com/studies/microplastics-and-male-reproductive-system-a-comprehensive-r-e47ebd26) — Narrative Review · 2026 · Toxicology reports · Karimian M, et al.: This review set out to examine how microplastics (tiny plastic particles) affect the male reproductive system at the cellular and molecular level. It compiled findings from multiple studies…
- [Effects of Increasing Total Fruit Intake With Avocado and Mango on Endothelial Function and Cardiometabolic Risk Factors in Adults With Prediabetes.](https://studies.shopoakman.com/studies/effects-of-increasing-total-fruit-intake-with-avocado-and-ma-8a174a15) — RCT · 2026 · Journal of the American Heart Association · Preiss C, et al.: This study looked at whether adding avocado and mango to the diet improves blood vessel function and metabolic health in adults with prediabetes. It was a randomized trial…
- [Comparing the effects of a 7-week repeated sprint training in hypoxia vs. heat in males and females.](https://studies.shopoakman.com/studies/comparing-the-effects-of-a-7-week-repeated-sprint-training-i-3bc71ca4) — RCT · 2026 · Frontiers in sports and active living · Piperi A, et al.: This study compared two ways of making sprint training harder: doing it in thin air, and doing it in the heat. Healthy men and women trained twice a…
- [Occupational Heat Exposure and Fertility Stress as Independent Factors of Low Semen Quality: A Multidimensional Analysis.](https://studies.shopoakman.com/studies/occupational-heat-exposure-and-fertility-stress-as-independe-24cdd661) — Cross Sectional · 2026 · American journal of men's health · Han N, et al.: This study looked at how occupational heat exposure and fertility-related stress might affect semen quality. It compared 485 men, split into groups with normal and low semen quality…
- [Quantifying the exposure-response relationship between temperature exposure and semen quality.](https://studies.shopoakman.com/studies/quantifying-the-exposure-response-relationship-between-tempe-67813c0a) — Cohort · 2026 · Frontiers in public health · Liu G, et al.: This study measured how outdoor temperature tracks with semen quality, using records from 5,114 men attending a reproductive medicine centre in Wenzhou, on China's east coast. The measure…
- [Effect of Different Modes of High Intensity Interval Training on Appetite-Related Hormones, Appetite Perception, and Anthropometric Measures in Overweight and Obese Men: A Randomized Controlled Trial.](https://studies.shopoakman.com/studies/effect-of-different-modes-of-high-intensity-interval-trainin-156a011c) — RCT · 2026 · Health science reports · Fekri-Kourabbaslou V, et al.: This study compared how two types of high-intensity exercise affect hunger hormones, appetite, and body composition in overweight and obese men. Thirty men were split into groups doing…
- [Seasonal trends in sperm quality in Denmark and Florida.](https://studies.shopoakman.com/studies/seasonal-trends-in-sperm-quality-in-denmark-and-florida-596a717a) — Cohort · 2026 · Reproductive biology and endocrinology : RB&E · Lassen E, et al.: This study set out to see if sperm quality changes with the seasons in Denmark and Florida, and whether outdoor temperatures play a role. It looked at semen…
- [Phthalates as the silent saboteurs of male fertility via changes in semen quality: a systematic review.](https://studies.shopoakman.com/studies/phthalates-as-the-silent-saboteurs-of-male-fertility-via-cha-54c95d9a) — Systematic Review · 2026 · Reproductive biology and endocrinology : RB&E · Dhar S, et al.: This systematic review set out to examine how phthalates, chemicals widely used to soften plastics and to carry fragrance in cosmetics, affect male fertility by altering semen quality.…
- [The effect of active virtual reality gaming on physical activity behaviour and mental health in young men with mild to moderate depressive symptoms: a randomised controlled feasibility trial.](https://studies.shopoakman.com/studies/the-effect-of-active-virtual-reality-gaming-on-physical-acti-14169d26) — RCT · 2026 · BMC psychiatry · Hargraves F, et al.: This study tested whether active virtual reality gaming (AVRG) could help young men with mild to moderate depression get more physical activity and improve their mental health. Researchers…
- [Prevalence and long-term outcomes of brain fog and cognitive impairment in individuals with long COVID: A systematic review.](https://studies.shopoakman.com/studies/prevalence-and-long-term-outcomes-of-brain-fog-and-cognitive-b416753e) — Systematic Review · 2026 · Medicine · Faseeh A, et al.: This systematic review set out to understand how common brain fog and cognitive impairment are in people with long COVID, and how these symptoms play out over time.…
- [Lower fat-free mass is independently linked to restless legs syndrome in men: a cross-sectional PSG-BIA study.](https://studies.shopoakman.com/studies/lower-fat-free-mass-is-independently-linked-to-restless-legs-4626c57b) — Cross Sectional · 2026 · Frontiers in neurology · Bae H, et al.: This study set out to explore whether lower muscle mass is linked to restless legs syndrome (RLS), a condition that disrupts sleep. Researchers analyzed data from 5,752 adults…
- [Reduced-exertion high-intensity interval training (REHIT) provides limited improvement in post-prandial and 24-hour glycemia in healthy, physically active men.](https://studies.shopoakman.com/studies/reduced-exertion-high-intensity-interval-training-rehit-prov-4c841fb5) — RCT · 2026 · Journal of exercise science and fitness · Chaudhry BA, et al.: This study looked at whether a quick, low-effort high-intensity interval training routine (REHIT) could improve blood sugar control after meals and over a full day in healthy, active…
- [Redox-Genomic Crosstalk: Linking Oxidative Stress, Sperm DNA Fragmentation, and Epigenetics in Personalized Management of Male Infertility.](https://studies.shopoakman.com/studies/redox-genomic-crosstalk-linking-oxidative-stress-sperm-dna-f-fd0e37b1) — Narrative Review · 2026 · Journal of personalized medicine · Sengupta P, et al.: This review examined how oxidative stress, sperm DNA damage, and epigenetic changes interact to affect male fertility. It pulled together studies on men with infertility, looking at how…
- [The Effects of Individualized Low- and Moderate-Load Circuit Training on Physical Performance, Hormonal Responses, And Hematological Adaptations in Resistance-Trained Men.](https://studies.shopoakman.com/studies/the-effects-of-individualized-low-and-moderate-load-circuit-509d5b9f) — RCT · 2026 · Journal of sports science & medicine · Peng W, et al.: This study compared how low-load and moderate-load circuit training affect strength, performance, and blood markers in men who already lift weights. Thirty-two trained men were split into groups…
- [Cannabis consumption is associated with altered steroid metabolism in young men.](https://studies.shopoakman.com/studies/cannabis-consumption-is-associated-with-altered-steroid-meta-a58c753e) — Cross Sectional · 2026 · Communications medicine · Galmiche M, et al.: This study set out to explore whether cannabis use affects hormone levels in young men. It compared blood steroid levels between 47 cannabis users and 47 non-users, measuring…
- [Comparison of linear and undulating periodization resistance training on athletic capacities and health promotion: a systematic review and meta-analysis.](https://studies.shopoakman.com/studies/comparison-of-linear-and-undulating-periodization-resistance-d3a68856) — Meta Analysis · 2026 · Frontiers in public health · Zhang Z, et al.: This study compared two approaches to resistance training, linear periodization (a steady progression of weight up and reps down over months) and undulating periodization (varying weight and reps…
- [Skeletal Muscle and Circulating microRNAs Adaptations to 12-Week HIIT With or Without L-Citrulline in Obese Older Adults.](https://studies.shopoakman.com/studies/skeletal-muscle-and-circulating-micrornas-adaptations-to-12-73785a4f) — RCT · 2026 · Journal of cachexia, sarcopenia and muscle · Mercier-Guery A, et al.: This study looked at how high-intensity interval training (HIIT) with or without L-citrulline (an amino acid that may boost blood flow and muscle health) affects tiny genetic regulators…
- [Sex difference of the associations of sex hormone and their related indicators with all-cause mortality.](https://studies.shopoakman.com/studies/sex-difference-of-the-associations-of-sex-hormone-and-their-8db434be) — Cohort · 2026 · Nutrition & metabolism · Sun Y, et al.: This study asked how sex hormones relate to the risk of dying, separately for men and women. It analyzed 7,294 U.S. adults in the National Health and Nutrition…
- [Impact of Vitamin D3 Supplementation on Androgens and Semen Parameters in Infertile Men: A Systematic Review and Meta-Analysis Based on Prospective Randomised Controlled Trials.](https://studies.shopoakman.com/studies/impact-of-vitamin-d3-supplementation-on-androgens-and-semen-8100ba30) — Meta Analysis · 2025 · Archivos espanoles de urologia · Jiao Y, et al.: This study looked at whether vitamin D3 supplementation improves hormone levels and semen quality in infertile men. It pooled data from six randomized controlled trials involving 945 men,…
- [Life's Essential 8 score and its association with sperm quality parameters in reproductive-aged men: evidence from the Led-Fertyl cohort.](https://studies.shopoakman.com/studies/life-s-essential-8-score-and-its-association-with-sperm-qual-1854892d) — Cross Sectional · 2025 · Human reproduction open · Davila-Cordova E, et al.: This study looked at whether a heart-healthy lifestyle is linked to better sperm quality in young men, using the American Heart Association's Life's Essential 8 score. That score…
- [Effect of cluster set resistance training combined with high-intensity interval training on cardiorespiratory and muscular fitness in untrained young men.](https://studies.shopoakman.com/studies/effect-of-cluster-set-resistance-training-combined-with-high-2709229c) — RCT · 2025 · PeerJ · Ma J, et al.: This study compared two ways of organising the same lifting session in untrained young men. The test method was cluster set resistance training, meaning a set is broken…
- [A Narrative Review of Heavy Metals and Sperm Quality: The Interplay with Antioxidant Imbalance and Reactive Oxygen Species.](https://studies.shopoakman.com/studies/a-narrative-review-of-heavy-metals-and-sperm-quality-the-int-d923602f) — Narrative Review · 2025 · Current issues in molecular biology · Azil S, et al.: This review set out to examine how heavy metals like lead, mercury, and cadmium affect sperm quality and male fertility, focusing on their role in oxidative stress and…
- [Can lifestyle changes significantly improve male fertility: A narrative review?](https://studies.shopoakman.com/studies/can-lifestyle-changes-significantly-improve-male-fertility-a-beab4772) — Narrative Review · 2025 · Arab journal of urology · Bocu K, et al.: This narrative review set out to explore how lifestyle choices affect male fertility, examining diet, exercise, stress, sleep, weight, and environmental exposures. It synthesized existing research on how…
- [Healthy and unhealthy dietary patterns and sperm quality from the Led-Fertyl study.](https://studies.shopoakman.com/studies/healthy-and-unhealthy-dietary-patterns-and-sperm-quality-fro-15ef50a6) — Cross Sectional · 2025 · Andrology · Davila-Cordova E, et al.: This study looked at how eating patterns relate to sperm quality in healthy young men. Researchers scored the diets of 200 men against several patterns, healthy ones like…
- [Obesity has a detrimental impact on temporal decline of sperm quality in normospermic patients: insights from a cross-sectional study of 2,430 patients over 14 years.](https://studies.shopoakman.com/studies/obesity-has-a-detrimental-impact-on-temporal-decline-of-sper-69bb7402) — Cross Sectional · 2025 · Reproductive biology and endocrinology : RB&E · Russo GI, et al.: This study looked at whether obesity speeds up the decline in sperm quality that has been seen over time. Researchers reviewed semen tests from 2,430 men with normal…
- [Dietary Fatty Acids as Modulators of Sperm Quality - From Molecular Pathways to Nutritional Interventions.](https://studies.shopoakman.com/studies/dietary-fatty-acids-as-modulators-of-sperm-quality-from-mole-1883905e) — Narrative Review · 2025 · Journal of dietary supplements · Yang XY, et al.: This review set out to explore how dietary fatty acids (FAs) affect sperm quality and male fertility. It looked at recent studies on how different FAs influence sperm…
- [Association Between Dietary Polyphenol Intake and Semen Quality: Insights from the FERTINUTS Study.](https://studies.shopoakman.com/studies/association-between-dietary-polyphenol-intake-and-semen-qual-1dc0aa46) — Cross Sectional · 2025 · Nutrients · Mostafa H, et al.: This study looked at whether dietary polyphenols (plant antioxidants found in fruits, vegetables, tea, and olive oil) are linked to semen quality in young men. It analyzed 3-day…
- [Impact of ejaculation frequency on semen parameters and DNA fragmentation: a cross-sectional study.](https://studies.shopoakman.com/studies/impact-of-ejaculation-frequency-on-semen-parameters-and-dna-f67dc4ff) — Cross Sectional · 2025 · Reproductive biology and endocrinology : RB&E · Xi Q, et al.: This study set out to see how often men ejaculate affects their sperm health, focusing on DNA damage and other semen measures. It looked at 1,349 men visiting…
- [The Role of Antioxidants in Male Fertility: A Comprehensive Review of Mechanisms and Clinical Applications.](https://studies.shopoakman.com/studies/the-role-of-antioxidants-in-male-fertility-a-comprehensive-r-2e506472) — Narrative Review · 2025 · Antioxidants (Basel, Switzerland) · Bouhadana D, et al.: This review looked at how oxidative stress (cell damage from unstable molecules called reactive oxygen species, a normal byproduct of metabolism that turns harmful when it outpaces the…
- [Association Between Dietary Intake of Omega-3 Fatty Acids and Serum Testosterone in Adult Males: Results From NHANES 2011-2016 and 2021-2023.](https://studies.shopoakman.com/studies/association-between-dietary-intake-of-omega-3-fatty-acids-an-e55794e6) — Cross Sectional · 2025 · Food science & nutrition · Su L, et al.: This study looked at whether eating more omega-3 fatty acids (healthy fats found in fish and some plants) is linked to higher testosterone levels in men. It used…
- [Sex-specific associations of serum 25-hydroxyvitamin D concentrations with incident sarcopenia in older adults: A 2-year follow-up study.](https://studies.shopoakman.com/studies/sex-specific-associations-of-serum-25-hydroxyvitamin-d-conce-ebc440ae) — Cohort · 2025 · The journal of nutrition, health & aging · Song S, et al.: This study looked at whether vitamin D levels in the blood are linked to developing sarcopenia (age-related muscle loss) in older adults. It followed 1,292 Korean adults aged…
- [BMI is associated with sperm quality and sex hormones in men: a meta-analysis.](https://studies.shopoakman.com/studies/bmi-is-associated-with-sperm-quality-and-sex-hormones-in-men-ec3b5afd) — Meta Analysis · 2025 · Frontiers in endocrinology · Ji F, et al.: This meta-analysis (a study that statistically pools many earlier studies) looked at how body mass index (BMI, a weight-for-height number used to flag over- or under-weight) relates to…
- [Effects of Creatine Monohydrate Loading on Sleep Metrics, Physical Performance, Cognitive Function, and Recovery in Physically Active Men: A Randomized, Double-Blind, Placebo-Controlled, Crossover Trial.](https://studies.shopoakman.com/studies/effects-of-creatine-monohydrate-loading-on-sleep-metrics-phy-897b8c1b) — RCT · 2025 · Nutrients · Ben Maaoui K, et al.: This study looked at whether a short, high-dose creatine (a compound stored in muscle that helps regenerate quick energy for short, hard efforts) routine improves sleep, performance, thinking,…
- [Dietary and Lifestyle Interventions to Mitigate Oxidative Stress in Male and Female Fertility: Practical Insights for Infertility Management-A Narrative Review.](https://studies.shopoakman.com/studies/dietary-and-lifestyle-interventions-to-mitigate-oxidative-st-4ed06853) — Narrative Review · 2025 · Metabolites · Moustakli E, et al.: This narrative review set out to explore how oxidative stress (an imbalance between harmful reactive oxygen species and the body's defenses) affects fertility in men and women, and…
- [Effectiveness of a canteen-based dietary intervention for metabolic syndrome in occupational men: A randomized controlled trial.](https://studies.shopoakman.com/studies/effectiveness-of-a-canteen-based-dietary-intervention-for-me-de981abe) — RCT · 2025 · Asia Pacific journal of clinical nutrition · Ma J, et al.: This study tested whether a workplace canteen could improve the health of men with metabolic syndrome (a cluster of a large waist, high blood pressure, high blood sugar,…
- [Distinct Clusters of Testosterone Levels, Symptoms, and Serum Trace Elements in Young Men: A Cross-Sectional Analysis.](https://studies.shopoakman.com/studies/distinct-clusters-of-testosterone-levels-symptoms-and-serum-7febdc50) — Cross Sectional · 2025 · Nutrients · Tanaka T, et al.: This study set out to explore how trace elements in the blood might relate to testosterone levels and symptoms like low energy, mood issues, and sexual health in…
- [Testosterone Therapy in Men in Their 40s: A Narrative Review of Indications, Outcomes, and Mid-Term Safety.](https://studies.shopoakman.com/studies/testosterone-therapy-in-men-in-their-40s-a-narrative-review-e32066fa) — Narrative Review · 2025 · Cureus · Canal de Velasco LM, et al.: This narrative review looked at the use, benefits, and safety of testosterone replacement therapy (TRT) in men aged 40-49 with low testosterone. It synthesized findings from randomized controlled…
- [Lifestyle and hormonal factors affecting semen quality and sperm DNA integrity: A cross-sectional study.](https://studies.shopoakman.com/studies/lifestyle-and-hormonal-factors-affecting-semen-quality-and-s-5c27e396) — Cross Sectional · 2025 · Oncoscience · Chamanmalik SI, et al.: This study looked at how lifestyle and hormones affect semen quality and sperm DNA health in men. It examined 278 Indian men aged 21 to 50, measuring sperm…
- [Resistance training as a key strategy for high-quality weight loss in men and women.](https://studies.shopoakman.com/studies/resistance-training-as-a-key-strategy-for-high-quality-weigh-7bd7a9d2) — Cohort · 2025 · Frontiers in endocrinology · Lahav Y, et al.: This study looked at how different types of exercise affect body composition during weight loss. It compared resistance training, aerobic exercise, and no exercise in 304 adults on…
- [The Effect of Dietary Supplements on Male Infertility in Terms of Pregnancy, Live Birth, and Sperm Parameters: A Systematic Review and Meta-Analysis.](https://studies.shopoakman.com/studies/the-effect-of-dietary-supplements-on-male-infertility-in-ter-4b90ffd1) — Meta Analysis · 2025 · Nutrients · Michaelsen MP, et al.: This systematic review and meta-analysis set out to see whether dietary supplements improve male fertility. It pooled 50 randomised trials in which men took a supplement for at…
- [Do mobile phones and laptop computers really impact sperm?](https://studies.shopoakman.com/studies/do-mobile-phones-and-laptop-computers-really-impact-sperm-9c46c3f7) — Narrative Review · 2025 · Arab journal of urology · Kavoussi PK, et al.: This review set out to examine whether mobile phones and laptops, as sources of electromagnetic radiation and heat, might harm male fertility by affecting semen quality. It analyzed…
- [Role of Mediterranean Diet and Ultra-Processed Foods on Sperm Parameters: Data from a Cross-Sectional Study.](https://studies.shopoakman.com/studies/role-of-mediterranean-diet-and-ultra-processed-foods-on-sper-dadbc514) — Cross Sectional · 2025 · Nutrients · Petre GC, et al.: This study looked at how diet relates to sperm quality, comparing the Mediterranean diet, which is built on seasonal, fresh and whole foods, against ultra-processed foods, which are…
- [Ambient climatic conditions and semen quality: a comparative analysis across the periods before, during, and after the COVID-19 pandemic.](https://studies.shopoakman.com/studies/ambient-climatic-conditions-and-semen-quality-a-comparative-2dc00204) — Cohort · 2025 · Frontiers in endocrinology · Kim H, et al.: This study asked whether the pandemic changed how sensitive sperm production is to weather. It took 2,672 semen analyses from 1,287 Korean men collected between 2018 and 2024…
- [Scrotal temperature change during running in naked humans.](https://studies.shopoakman.com/studies/scrotal-temperature-change-during-running-in-naked-humans-7fdaa5da) — Other · 2025 · Scientific reports · Takii Y, et al.: This study measured what happens to scrotal temperature during a run. Eleven trained long-distance runners ran on a treadmill for 60 minutes at 60% of their maximum aerobic…
- [Mediterranean Diet, Semen Quality, and Medically Assisted Reproductive Outcomes in the Male Population: A Systematic Review and Meta-Analysis.](https://studies.shopoakman.com/studies/mediterranean-diet-semen-quality-and-medically-assisted-repr-f9471425) — Meta Analysis · 2025 · Advances in nutrition (Bethesda, Md.) · Agarwal R, et al.: This study set out to see if sticking to a Mediterranean diet (MedDiet) is linked to better sperm quality and fertility outcomes in men. It pooled data from…
- [Impact of lifestyle and environmental factors on fertility.](https://studies.shopoakman.com/studies/impact-of-lifestyle-and-environmental-factors-on-fertility-3e5e5053) — Narrative Review · 2025 · Current opinion in urology · Szabó A, et al.: This review gathers recent evidence on what damages male fertility and how much of it can be undone. Smoking raises sperm DNA fragmentation (breaks in the genetic material…
- [Analyzing the impact of occupational exposures on male fertility indicators: A machine learning approach.](https://studies.shopoakman.com/studies/analyzing-the-impact-of-occupational-exposures-on-male-ferti-4eb0982d) — Cross Sectional · 2025 · Reproductive toxicology (Elmsford, N.Y.) · Mohammadi H, et al.: This study asked which workplace exposures matter most for men's reproductive health. It took 80 men working in an automobile parts plant, measured their exposure to magnetic fields,…
- [The effect of acute hot water immersion on cutaneous peripheral microvascular responses in males of White-European, Black-African and South-Asian descent.](https://studies.shopoakman.com/studies/the-effect-of-acute-hot-water-immersion-on-cutaneous-periphe-737e3d0e) — RCT · 2025 · Temperature (Austin, Tex.) · Bellini D, et al.: This study looked at how the smallest blood vessels in the skin respond to a hot bath, and whether that differs by ethnicity. Thirty-one healthy young men (10…
- [Influence of psychosocial work factors on male fertility and sperm quality: a scoping review.](https://studies.shopoakman.com/studies/influence-of-psychosocial-work-factors-on-male-fertility-and-830e608f) — Scoping Review · 2025 · Reproductive biology and endocrinology : RB&E · Ansah EW, et al.: This scoping review set out to map the evidence on how psychosocial work factors affect male fertility and sperm quality. It analyzed 18 peer-reviewed studies from 1990 to…
- [Sex-Specific Interrelationship Between Sleep Quality and Daytime Sleepiness in Predicting Injury Occurrence in Physically Active University Students.](https://studies.shopoakman.com/studies/sex-specific-interrelationship-between-sleep-quality-and-day-42d317de) — Cross Sectional · 2025 · Journal of clinical medicine · Domaradzki J: This study set out to examine how sleep quality and daytime sleepiness together affect injury risk in physically active university students. It analyzed data from 418 students (199…
- [Ashwagandha Does Not Enhance the Effect of High-Intensity Interval Training on Selected Energy Metabolism Parameters in Young Healthy Men.](https://studies.shopoakman.com/studies/ashwagandha-does-not-enhance-the-effect-of-high-intensity-in-edca7354) — RCT · 2025 · Nutrients · Charmas M, et al.: This study set out to see whether ashwagandha, a herb widely sold for stress and performance, adds anything to interval training. Interval training here meant repeated hard efforts…
- [Exposure to ambient particulate matter and semen quality: the modifying role of socioeconomic status and lifestyle factors in chinese men.](https://studies.shopoakman.com/studies/exposure-to-ambient-particulate-matter-and-semen-quality-the-e1b6744e) — Cross Sectional · 2025 · BMC public health · Liu W, et al.: This study looked at whether exposure to air pollution, especially fine particles (PM2.5 and PM10), affects semen quality in men. It included 1,180 men aged 18, 45 from…
- [Factorial analysis of zinc serum levels, fatty acids, oxidative stress parameters and supplementation on assisted reproductive technology outcome.](https://studies.shopoakman.com/studies/factorial-analysis-of-zinc-serum-levels-fatty-acids-oxidativ-b60ac116) — Cross Sectional · 2025 · Journal of medical biochemistry · Veselinović A, et al.: This study set out to identify which factors might influence pregnancy success in couples undergoing assisted reproductive technology (ART, fertility treatments that handle eggs and sperm outside the…
- [Assessing the influence of preconception diet on male fertility: a systematic scoping review.](https://studies.shopoakman.com/studies/assessing-the-influence-of-preconception-diet-on-male-fertil-21345b9d) — Systematic Review · 2024 · Human reproduction update · Tully CA, et al.: This scoping review aimed to assess how diet before conception affects male fertility and reproductive outcomes. It analyzed 37 studies, including one randomized controlled trial and 36 observational…
- [Does coenzyme Q10 improve semen quality and circulating testosterone level? a systematic review and meta-analysis of randomized controlled trials.](https://studies.shopoakman.com/studies/does-coenzyme-q10-improve-semen-quality-and-circulating-test-d269fd0f) — Meta Analysis · 2024 · Frontiers in pharmacology · Akhigbe TM, et al.: This systematic review and meta-analysis set out to assess whether coenzyme Q10 (CoQ10) supplementation improves semen quality and male hormone levels. It pooled data from eight randomized controlled…
- [Influence of the Mediterranean diet on seminal quality-a systematic review.](https://studies.shopoakman.com/studies/influence-of-the-mediterranean-diet-on-seminal-quality-a-sys-97ba75b0) — Systematic Review · 2024 · Frontiers in nutrition · Piera-Jordan CÁ, et al.: This systematic review set out to assess whether following a Mediterranean diet affects sperm quality in men of reproductive age. It analyzed 10 studies involving over 2,000 men…
- [Male Fertility as a Proxy for Health.](https://studies.shopoakman.com/studies/male-fertility-as-a-proxy-for-health-70d28f42) — Narrative Review · 2024 · Journal of clinical medicine · Zhao CC, et al.: This narrative review argues that a man's fertility is a readable signal of his health generally, not just of his ability to father a child. The reasoning runs…
- [The Influence of Lifestyle on Male Fertility in the Context of Insulin Resistance-Identification of Factors That Influence Semen Quality.](https://studies.shopoakman.com/studies/the-influence-of-lifestyle-on-male-fertility-in-the-context-198ada6c) — Cross Sectional · 2024 · Journal of clinical medicine · Zańko A, et al.: This study set out to see how lifestyle and insulin resistance relate to male fertility. Insulin resistance means the body has stopped responding properly to insulin, so it…
- [Effects of concurrent heat and hypoxic training on cycling anaerobic capacity in men.](https://studies.shopoakman.com/studies/effects-of-concurrent-heat-and-hypoxic-training-on-cycling-a-04862445) — RCT · 2024 · Scientific reports · Maciejczyk M, et al.: This study tested whether making training harder by adding heat, thin air, or both improves short-burst cycling power. Eighty untrained young men were split into five groups of…
- [Correlation of mediterranean diet pattern and lifestyle factors with semen quality of men attending fertility clinics: A cross-sectional study.](https://studies.shopoakman.com/studies/correlation-of-mediterranean-diet-pattern-and-lifestyle-fact-f9a4e30f) — Cross Sectional · 2024 · European journal of obstetrics, gynecology, and reproductive biology · Palani A, et al.: This study looked at whether following a Mediterranean diet is linked to better semen quality in men visiting fertility clinics. It compared semen parameters across 274 men grouped…
- [Sauna bathing and mortality risk: unraveling the interaction with systolic blood pressure in a cohort of Finnish men.](https://studies.shopoakman.com/studies/sauna-bathing-and-mortality-risk-unraveling-the-interaction-0a5ecde9) — Cohort · 2024 · Scandinavian cardiovascular journal : SCJ · Kunutsor SK, et al.: This study followed 2,575 Finnish men aged 42 to 61 for a median of 27.8 years and asked whether sauna habits change how dangerous high blood pressure is.…
- [Observational Cross-Sectional Study on Mediterranean Diet and Sperm Parameters.](https://studies.shopoakman.com/studies/observational-cross-sectional-study-on-mediterranean-diet-an-81b541b6) — Cross Sectional · 2023 · Nutrients · Petre GC, et al.: This study looked at whether following a Mediterranean diet (MD) is linked to healthier sperm in men. Researchers surveyed 300 men (average age 35) visiting a reproductive medicine…
- [Exploring the efficacy and safety of a novel standardized ashwagandha (Withania somnifera) root extract (Witholytin®) in adults experiencing high stress and fatigue in a randomized, double-blind, placebo-controlled trial.](https://studies.shopoakman.com/studies/exploring-the-efficacy-and-safety-of-a-novel-standardized-as-a6e0e8e0) — RCT · 2023 · Journal of psychopharmacology (Oxford, England) · Smith SJ, et al.: This study set out to test whether ashwagandha, a traditional herb, could reduce stress and fatigue in overweight or mildly obese adults aged 40-75 who reported high stress…
- [No effects of a 4-week post-exercise sauna bathing on targeted gut microbiota and intestinal barrier function, and hsCRP in healthy men: a pilot randomized controlled trial.](https://studies.shopoakman.com/studies/no-effects-of-a-4-week-post-exercise-sauna-bathing-on-target-6ad5e50c) — RCT · 2022 · BMC sports science, medicine & rehabilitation · Karolkiewicz J, et al.: This study looked at whether adding sauna sessions after exercise affects gut bacteria, intestinal barrier function, and inflammation in young men. Fifteen untrained men were split into two…
- [Male personal heat exposures and fecundability: A preconception cohort study.](https://studies.shopoakman.com/studies/male-personal-heat-exposures-and-fecundability-a-preconcepti-98cd5521) — Cohort · 2022 · Andrology · McKinnon CJ, et al.: This study asked whether a man's heat exposures affect how quickly his partner conceives, which is a harder and more useful question than whether they affect a semen…
- [Lifestyle and fertility: the influence of stress and quality of life on male fertility.](https://studies.shopoakman.com/studies/lifestyle-and-fertility-the-influence-of-stress-and-quality-3f37b661) — Narrative Review · 2018 · Reproductive biology and endocrinology : RB&E · Ilacqua A, et al.: This review pulled together what is known about how everyday life affects a man's fertility, covering age, psychological stress, nutrition, physical activity, caffeine, scrotal temperature, hot water and…
- [Hormonal, chemical and thermal inhibition of spermatogenesis: contribution of French teams to international data with the aim of developing male contraception in France.](https://studies.shopoakman.com/studies/hormonal-chemical-and-thermal-inhibition-of-spermatogenesis-3b0bf8b0) — Narrative Review · 2017 · Basic and clinical andrology · Soufir JC: This is a history of forty years of French research into male contraception (hormonal, chemical and thermal) summarising clinical trials involving thousands of men and couples. Those trials…

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