http://www.hhs.gov/safety/bpa/
U.S. Department of Health and Human Services
Bisphenol A, more commonly known as BPA, is a chemical that has been used for more than 40 years in the manufacture of many hard plastic food containers. While BPA is not proven to harm children or adults, recent studies on subtle effects of low doses of BPA in laboratory animals have led federal health officials to express some concern about the safety of BPA.