Peer-reviewed research concerning supplements, summarized and appraised in plain language with every source cited.
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 healthy men…
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 (sex hormone-binding…
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 astaxanthin affected…
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 least 12…
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 trials involving…
This meta-analysis set out to see whether omega-3 fats improve sperm in infertile men. It pooled three randomized trials, 147 men on omega-3 and 143 on control treatments, and measured…
Infertility affects about 15 percent of the world's population, which is what makes this question worth asking. This systematic review and meta-analysis pooled randomized trials testing whether nutrients, dietary supplements…
This study set out to see whether zinc in semen is linked to male infertility and whether zinc supplements improve sperm. It pooled 20 studies, comparing zinc levels and sperm…
This meta-analysis set out to see if coenzyme Q10 (CoQ10) supplements improve male fertility, focusing on live birth and pregnancy rates, sperm concentration, and sperm motility. It pooled data from…