Consider vitamin D if you're looking to boost your size and strength
December 7, 2010
Dr. Jim Stoppani, Ph.D.
Vitamin D just took a hit in the media when one study showed that the average person doesn't need to supplement with it. However, bodybuilders are not average, and if you're looking to boost your size and strength you'll want to consider supplementing with Vitamin D.
Since vitamin D gets converted in the body to a steroid hormone--1,25-dihydroxyvitamin D--it makes sense that it would have some effect on strength. This active form of vitamin D binds to specific receptors found on membranes and nuclei of muscle cells. When it binds to these receptors, it enhances muscle contraction and protein synthesis--the buildup of muscle protein that leads to muscle growth. Research shows that certain types of these receptors may be responsible for greater muscle size and strength. Adequate vitamin D levels can help ensure your muscle receptors are activated for optimal muscle function, strength and muscle growth.
We recommend taking 1,000 international units of vitamin D about twice per day with meals.