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Testosterone & Hormones

Peer-reviewed research on testosterone, hormonal regulation, age-related change, and the lifestyle factors associated with male endocrine health.

23Studies

23Human studies

2026Most recent

11Countries

Vitamin D Supplementation, Total Testosterone, and Androgen Bioavailability Markers in Adult Men: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

Nutrients2026n = 21 comparison-level records from 18 reports

Meta AnalysisHuman

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…

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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.

Archivos espanoles de urologia2025n = 945 subjects

Meta AnalysisHuman

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, measuring changes…

Better Fertility Endocrine Fertility & Sperm

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