WASHINGTON—According to a study released Monday by the Environmental Working Group, the best defense against the harmful effects of the sun's rays is a thick coating of human blood. "We found that a generous application of human blood blocks 98 percent more UVA and UVB rays than standard SPF 30 sunscreen lotions," said researcher Dr. Carl Lapkins, adding that while pig and chicken blood can mildly decrease the risk of skin cancer, human blood ultimately offers the most effective form of protection.
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