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Exposing skin to sunlight is a convenient way to meet our vitamin D needs, which is crucial for bone health. That might make you wonder: Does wearing sunscreen interfere with vitamin D levels and potentially cause vitamin D deficiency?
The short answer is yes. But before you toss your SPF 30, dermatologists say the relationship between sunscreen and vitamin D is much more nuanced than that. According to Dr. Henry W. Lim, chair emeritus of the department of dermatology at the Henry Ford Health System and former president of the American Academy of Dermatology, if sunscreen is supplied in a thick layer it"can effectively block sunlight and cause a lack of vitamin D synthesis in skin," Lim said.
How dangerous is that sunburn? 01:20A broad spectrum sunscreen with an SPF of 30 or higher, which protects against harmful UVA and UVB rays, should be generously applied to all exposed areas of the body when one is outside for a prolonged period of time, in order to minimize the risk of sunburn and skin cancer, Lim explained. While individuals with darker skin have a lower risk of skin cancer from sunlight, they should still follow these guidelines, according to Lim.
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