Studies related to and

Effect Of Vitamin D Supplementation On Testosterone Levels In Men

Effect Increase
Trial Design Double blind
Trial Length n/a
Number of Subjects 165
Sex n/a
Notes for this study:
Men taking 3,332 IU of vitamin D for one year, after bringing up serum levels past an average of 50nmol/L increased testosterone from 10.7±3.9 nmol/l to 13.4±4.7 nmol/l. Bioactive and free testosterone also increased.

The increase in testosterone was not seen in women.