Coffee may be more than a great morning pick-me-up. Suntan lotion laden with caffeine might be an effective way to prevent harmful sun damage or skin cancer. A new study published in the Proceedings of the National Academy of Sciences, adds weight to the theory that caffeine guards against certain skin cancers at the molecular level by inhibiting ATR, a protein enzyme in the skin. Scientists believe, based on what they have learned studying mice, caffeine applied directly to the skin might help prevent damaging ultraviolet light from causing skin cancer
