Study participants who handled receipts printed on thermal paper continuously for 2 hours without gloves had an increase in urine bisphenol A (BPA) concentrations compared to when they wore gloves, according to a study in JAMA. Human exposure to bisphenol A (BPA) has been associated with adverse health outcomes, including reproductive function in adults and neurodevelopment in children exposed shortly before or after birth. "Exposure to BPA is primarily through dietary ingestion, including consumption of canned foods.

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