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 |
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.
