MADISON, Wis. -- The Food and Drug Administration is looking closely at a chemical commonly used in plastic products.

Bisphenol a or BPA is used in baby bottles and other plastics but a new study published in the Journal of the American Medical Association shows that chemical could be linked to heart disease and diabetes.

Under the study participants who had the highest levels of BPA also were twice as likely to have heart disease.

The FDA said consumers should avoid products with a recycling seven on the them, and avoid heating plastic containers in microwaves.

Several states are considering a BPA ban, and some manufacturers are removing BPA from their products.