Low levels of vitamin D in the population as a whole suggest that most people need to take a vitamin D supplement. This may be especially true for seniors, as the ability to synthesize vitamin D in the skin declines with age.

Andrew Weil

More from: Andrew Weil
Low levels of vitamin D in the population as a whole suggest that most people need to take a vitamin D supplement. This may be especially true for seniors, as the ability to synthesize vitamin D in the skin declines with age.

DOWNLOAD

You are free to use this picture for any purpose including commercial. A credit linking back to this page is appreciated.