evidence: Studies have never found that everyday sunscreen use leads to vitamin D insufficiency. In fact, people who use sunscreen daily can maintain their vitamin D levels. [...] High-SPF sunscreens are designed to filter out most of the sun’s UVB radiation, since UVB damage is the major cause of sunburn and can lead to skin cancers. UVB wavelengths happen to be the specific wavelengths that trigger vitamin D production in the skin. Nonetheless, clinical studies have never found that everyday sunscreen use leads to vitamin D insufficiency. In fact, the prevailing studies show that people who use sunscreen daily can maintain their vitamin D levels. [...] The thing is, even just those unprotected 10 or 15 minutes are way more than enough time to cause DNA damage, and every bit of this damage adds up throughout your lifetime, producing more and more genetic mutations that keep increasing your lifetime risk of skin cancer. Unfortunately, the very same UVB wavelengths (290-320 nanometers, or nm) that make the body synthesize vitamin D are also the wavelengths that produce sunburn and genetic mutations that can lead to skin cancer.