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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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