Some plastic containers, such as those made of polycarbonate, have been found to leech a chemical known as "Bisphenol A" (BPA) when heated. One expert of the U.S. National Institute of Environmental Health Sciences, endocrinologist Retha Newbold, has expressed that BPA levels found as a result of drinking from plastic, are high enough to be of possible concern for unborn children and infants.

On the Other: BPA in Tiny Amounts May Be Okay.

The U.S. Food and Drug Administration and Environmental Protection Agency have approved BPA for use in plastic containers. BPA in plastic may be much safer for adults than for children and adolescents, as studies show that BPA levels found in adults are much lower.

Bottom Line

The primary concern expressed, in regard to BPA in plastic containers, relates to the heating of the plastics. It is likely wise to avoid heating plastic containers in a dishwasher or microwave until further research has concluded that it is safe to do so. This is especially true for baby bottles used by infants. While such plastics may be okay for adults, it would be prudent to use alternatives for children, who are worth the extra effort to ensure safe levels of exposure to BPA.

Source:

Scientific American; Plastic (not) fantastic: food containers leach a potentially harmful chemical; David Biello; Feb. 19, 2008