The Myths and Facts of Vitamin D and Sun Exposure (Part 2)

Myth #1 – Sunscreen blocks Ultraviolet (UV) light. Consequently, UV radiation is prevented from reaching the skin, which leads to an inadequate amount of vitamin D in the body.

Fact – A 1997 study published in the Journal of the National Cancer Institute of patients with Xeroderma Pigmentosa (a disease that predisposes persons to skin cancer who are exposed to very low levels of ultraviolet radiation), showed that these patients have normal vitamin D levels despite negligible amounts of UV exposure.

Myth #2 -A considerable amount of UV exposure is necessary to maintain normal levels of vitamin D.

Fact – Normal vitamin D levels are maintained through a normal diet.

Myth #3 – Sunscreen does not allow UV radiation to reach the skin, so if people wear sunscreen, their bodies can form vitamin D.

Fact – Even the best sunscreen cannot block all UV radiation. But the amount that does hit the skin is enough to promote adequate vitamin D formation.

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