Companies urged to avoid using bisphenol A in baby bottles

But Connecticut Atty. Gen. Richard Blumenthal criticized the FDA for declining to take action after a preliminary study last month drew a possible connection between bisphenol and risks of heart disease and diabetes.

"Unfortunately the federal agency, the Federal Food and Drug Administration, has been asleep at the switch, in fact resistant to respecting the scientific evidence that grave harm can result in use of this product," Blumenthal said.

A preliminary study released last month by the Journal of the American Medical Assn. suggested that adults exposed to higher amounts of the chemical were more likely to report having heart disease and diabetes.

Michael Herndon, an FDA spokesman, said Monday that the agency was continuing to evaluate its risk assessment.

More than 90% of Americans have traces of bisphenol in their bodies, but the FDA says the levels of exposure are too low to pose a health risk. Other scientists, however, say bisphenol has been shown to affect the body even at low levels.

Letters were sent Friday to baby bottle makers including Avent America Inc. and Evenflo Co., and formula makers such as Abbott Laboratories and Wyeth.