Sunscreen is an easy and effective way of preventing overexposure to UV rays and subsequent sunburn. In a systematic review of multiple published studies regarding the use of sunscreen and its effect on Vitamin D levels, it was determined that it’s typical usage—under-applying in amount, frequency, and locations over the body compared to what’s directed—will not decrease cutaneous vitamin D production.
Sunscreen usage in theory can significantly reduce cutaneous vitamin D production, but its normal usage will generally not lead to vitamin D deficiency..
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