Slather on the SPF
The CDC has found that UV rays from the sun are the leading environmental cause of skin cancer — the most common type of cancer in the United States. So before you step outside, bulk up your defenses by applying sunscreen with an SPF of 15 or greater that protects against both UVA and UVB rays. The American Cancer Society recommends using at least a palmful for your entire body, and reapplying every two hours while you're out in direct sunlight, especially after you've been swimming or if you've been sweating at lot.
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