No. And it doesn’t cause most of the ailments attributed to it by poorly-constructed observational studies in the past 20 years. This is old news but some health care professionals still test for vitamin D in the belief that many medical conditions are cause by its deficiency. In November 2010, the Institute of Medicine, one of the most prestigious and authoritative medical organizations, asserted that not only is this deficiency overestimated in the U.S., but that it is not related to the plethora of medical conditions that it may have allegedly caused.
The only need for vitamin D supplementation is for maintenance of bone health and prevention of bone loss in young individuals and elderly women. Most people otherwise get enough vitamin D through their diet and through sun exposure.
“The committee determined that for most North Americans, regardless of age group, an EAR of 400 international units, or IUs, of vitamin D per day is needed. An RDA of 600 IUs was set for children ages 1 year and older, as well as for adolescents, pregnant and lactating women, and adults as old as 70.”
Below is a good summary article from the American Academy of Family Practice (AAFP).