Bisphenol A (BPA), is a man-made chemical used in thousands of consumer products to harden plastic, line tin cans, make CDs, and coat receipts. It is also a known endocrine disruptor, which means it interferes with how hormones work in the body.

The chemical has been linked to a range of adverse health effects including cancer, diabetes, heart disease, early puberty, obesity, and behavioral problems. Senator Feinstein has introduced legislation to ban BPA from products used to feed babies and children.