Endocrine

Peer-reviewed research concerning endocrine, summarized and appraised in plain language with every source cited.

27Studies
27Human studies
2026Most recent
14Countries

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…