I found both your articles on vitamin D very interesting. My question now is whether the rays received in a tanning bed can cause the skin to manufacture vitamin D.
Wendy Wade Kalamazoo, Mich.
Ultraviolet–B radiation triggers the skin to produce vitamin D, whether those rays come from the sun or a lamp. However, not all tanning salons use lamps that emit UV-B rays as well as UV-A wavelengths
.—J.
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