Common plastic linked to heart disease
By Anna Saleh for ABC Science Online Posted Wed Sep 17, 2008 5:11pm AEST
Bisphenol A (BPA), a chemical commonly used in plastic food and beverage containers and in the coating of food cans, has been linked to heart disease. The study of 1,455 adults aged 18-74, found those with the highest concentrations of BPA in their urine had two to three times the odds of cardiovascular disease, compared with those with the least amounts of the compound in their systems. It also found an association between BPA and abnormal concentrations of liver enzymes.
Professor Dingle says this is suggested by the fact that in the new study, BPA was associated with abnormal concentrations of three liver enzymes. He says BPA could be interacting with the genes for these enzymes and changing their expression levels. Similarly, BPA could be interacting with genes that play a role in heart disease, Professor Dingle says.
The substance is bisphenol-a, or BPA, widely used in the making of the hard, clear and nearly unbreakable plastic called polycarbonate. Studies and tests show that trace amounts of BPA are leaching from polycarbonate containers into foods and liquids. The chemical is used in food-storage containers, some clear plastic pitchers used for filtered water, refillable water bottles and the lining of soft-drink and food cans.
Any product made of hard, clear plastic is probably made from polycarbonate unless the manufacturer specifically states that it’s BPA-free. Its used in refillable water bottles without a stamp, if its hard shatter proof and clear you can assume its made from polycarbonate.