Polycarbonate bottles release the chemical bisphenol A (BPA) into any liquid stored in them, with the result that when people drink from the bottles their urine contains more BPA - two-thirds more in participants who drank for just a week from polycarbonate bottles, according to research by the Harvard School of Public Health.
BPA interferes with reproductive development and is also linked to cardiovascular disease and diabetes in humans. Some baby feeding bottles release BPA. Scientists are warning that babies are a greater risk because more BPA is released when the bottles are heated, and the chemical is potentially more harmful to babies. Some manufacturers stopped using BPA in bottles and in 2008 Canada banned its use in baby bottles.
BPA is also used in dentistry composites and sealants and in the lining of aluminium food and beverage cans.
Written by Margaret Wilde
Margaret is the author of www.wildeaboutsteroids.co.uk
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