We were designed: To live "under the sun". Tanning is a natural mechanism that protects you if you fo it slowly and avoid burning. Uvl causes the skin to synthesize vitamin d and that is why vit d deficiency is widespread in the northern hemisphere because we have been brainwashed that the sun is dangerous. It is all part of a general health problem that involves diet, exercise and appropriate rest.
Answered 5/24/2020
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