Posted on August 15, 2012 by Boulderdash
As vacationers prepare to spend time outdoors this summer, many of them will pack plenty of sunscreen in hopes it will protect their bodies from overexposure, and possibly from skin cancer. But researchers at Missouri University of Science and Technology are discovering that sunscreen may not be so safe after all.
Cell toxicity studies by Dr. Yinfa Ma, Curators? Teaching Professor of chemistry at Missouri S&T, and his graduate student Qingbo Yang, suggest that when exposed to sunlight, zinc oxide, a common ingredient in sunscreens, undergoes a chemical reaction that may release unstable molecules known as free radicals. Free radicals seek to bond with other molecules, but in the process, they can damage cells or the DNA contained within those cells. This in turn could increase the risk of skin cancer.
Ma also found that the longer zinc oxide is exposed to sunlight, the greater the potential damage to human cells.
via Sunscreen ingredient may pose skin cancer risk, researchers find ? Missouri S&T News and Events.
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