evidence: Actually, the opposite is true: Devices like tanning beds and sun lamps can emit higher amounts of ultraviolet radiation than the sun, including both UVA and UVB radiation. UV radiation of any type increases your cancer risk, and the more you get, the higher your risk.Â [...] Many Americans are deficient in vitamin D, and certain groups â like older adults, obese people and people with dark skin â are at higher risk of a deficiency. And itâs true that UV exposure without the protection of sunscreen causes your skin to produce vitamin D. Vitamin D is important for promoting strong, healthy bones and has even been linked to lower risks of certain types of cancer. [...] Thereâs nothing wrong with enjoying the sunshine, Lee said. But slap on that sunscreen first. Getting a sunburn, even infrequently, boosts your risk of melanoma.