BPA, or bisphenol A, may potentially have teratogenic effects on a developing fetus. BPA is a chemical found mainly in plastic, and is often used in containers that store beverages and food. When exposed to heat, the BPA can leach into food and be ingested. At this time, it is unclear whether BPA has teratogenic effects on the fetus. Recent studies conducted on mice hypothesize that BPA exposure during the last trimester of pregnancy can cause behavioral changes in the newborn after birth. However, no studies have been conducted on human pregnancies. More research is required to clarify the exact relationship of BPA exposure and its effect on the developing fetus. Most health care providers, however, do recommend limiting exposure to BPA during pregnancy.