Testosterone levels increased after vitamin D supplementation (342 from 320)

Looking for Links Between Testosterone and Vitamin D Levels

• presented at the American Urological Association’s annual meeting in New Orleans

• ”The men who failed to correct the deficiency, on average, had total testosterone levels of 319.6 ng/L, while men who took supplements, and men with naturally sufficient levels of vitamin D, had total testosterone levels that averaged 341.7 ng/L (P=.012)”

Article did not mention dose size

Note: as little as 2,000 IU might be enough for most men, but some will need 4,000 IU or more.

See also VitaminDWiki

• Testosterone increased 20 percent with daily 3332 IU vitamin D – RCT Dec 2010

• Vitamin D and fertility – Lerchbaum 2012, 2014

• High Testosterone is associated with higher vitamin D in soldiers – April 2015

• Male fertility is improved in many ways by vitamin D – Jan 2014

• Testosterone levels related to vitamin D levels up to 30 ng – July 2012

• Vitamin D, athletes, hormones – June 2016

• Erectile Dysfunction and vitamin D - many studies

• Increased Testosterone and Erectile function, decreased weight with Vitamin D – March 2017