Vitamin D is an important nutrient for healthy bone growth, calcium absorption, and proper muscle, nerve, and immune function.
Dietary sources are few and far between, and while eggs, salmon, and cod liver oil are decent sources, most people get their Vitamin D from the sun’s rays. However, a simple supplement may be the most reliable way to reach the recommended daily intake of about 600 IUs.
Scientists are still learning about the importance of this understudied nutrient: some studies show that it helps to prevent depression and improve testosterone production, but more research is needed .
- Effect of vitamin D supplementation on testosterone levels in men. Pilz S, Frisch S, et al. Hormone and Metabolic Research, 2011 Mar;43(3):223-5.⤴