What’s wrong with reusable plastic water bottles?
Reusable plastic bottles have been in the hot seat since several studies indicated that bottles made with a manmade hardening chemical called bisphenol A, or BPA, long used to make polycarbonate bottles, could leach into water in low doses. One study by scientists at the University of Cincinnati found that leaching increased if the plastic was heated. The Canadian government then declared BPA a toxic substance, triggering a ban on products made with BPA, including baby bottles, other baby products and water bottles, according to research compiled by the Boston-based Clean Water Fund. Researchers at the National Institutes of Health are conducting ongoing studies into the effects of the chemical but did release preliminary data last year showing that neonatal exposure to low levels of BPA in rats caused cancerous growths. Manufacturers and retailers that sell plastic bottles in the United States reacted by switching over to BPA-free polycarbonate bottles. Should you switch to a metal wa
