Cureus2026n = 100
Cross SectionalHuman
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 mass index…
Asian journal of andrology2026n = 3336
Cross SectionalHuman
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 a fertility…
American journal of men's health2026n = 7,418
Cross SectionalHuman
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, using body…
Clinical nutrition research2026n = 4,819
Cross SectionalHuman
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 insulin resistance,…
Human reproduction open2025n = 223
Cross SectionalHuman
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 rates eight…
Reproductive biology and endocrinology : RB&E2025n = 2,430
Cross SectionalHuman
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 sperm counts…
Nutrients2025n = 358
Cross SectionalHuman
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 high in…
Journal of clinical medicine2024n = 73
Cross SectionalHuman
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 takes more…