Grocery receipts could be harmful to your health. A study by the Environmental Working Group (EWG) found that cash-register receipts used from grocery stores to fast-food outlets contain high levels of an estrogen-like chemical bisphenol A (BPA) on 40 percent of cash-register receipts.
BPA is used to coat thermal paper used in receipts, and, according to USA Today, high levels were found on receipts from Whole Foods, the U.S. Postal Service, Walmart, and other stores, while receipts from Target and Starbucks were free of BPA or only contained trace amounts.
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