Effect of vitamin D supplementation on testosterone levels in men: a randomized controlled trial
Pilz S, Frisch S, Koertke H, Kuhn J, Dreier J, Obermayer-Pietsch B
Published in Hormone and Metabolic Research
Methodology
One-year randomized double-blind placebo-controlled trial of 3332 IU/day vitamin D on total, bioactive and free testosterone and SHBG in overweight men.
Key Findings
Total and free testosterone increased significantly in the vitamin D group while placebo showed no change; SHBG was unchanged.
Conclusions
Vitamin D influences androgen status without altering SHBG.
Limitations
Single centre; overweight men undergoing weight reduction.
Supplements Studied
Total and free testosterone increased significantly in the vitamin D group while placebo showed no change
Outcomes Measured
Total and free testosterone increased significantly in the vitamin D group while placebo showed no change; SHBG was unchanged
Total and free testosterone increased significantly in the vitamin D group while placebo showed no change
Study Details
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