Gaiam bottles were specifically marketed as BPA-free when, in fact, testing showed that Gaiam's aluminum water bottles leached BPA at a level of 23.8 parts per billion, approximately 20 times the level of BPA leaching found in independent tests of SIGG water bottles, according to Food Consumer.
BPA is commonly used in the production of plastic and the epoxy linings in metal cans used to store food and beverages.
Studies have shown that BPA mimics estrogen and can be harmful even in small doses. According to MSN Health, the chemical can cause infertility, prostate cancer and breast cancer. Children, infants and fetuses are more susceptible to the effects of BPA because their reproductive organs are still developing.
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USA Today notes that BPA research was highlighted at the Endocrine Society's annual meeting in Washington, D.C. One study was presented that linked BPA to abnormal heart rhythms in rats and mice, and a separate study found that BPA permanently changed the DNA of mice.
All this information about BPA has fueled public concern, especially now that consumers have learned some products are falsely marketed as BPA-free.