BPA is a plasticizer that is found in water bottles, CDs, DVDs, car parts, and household items. A new study shows that if you consume anything with BPA, either by drinking or absorbing it through your skin, the plasticizer will not be made harmless by your body processes. When you consume a plasticizer, it may easily enter your bloodstream and cause your estrogen levels to increase. The increase of estrogen, whether it is natural or synthetic, increases your risk of breast and ovarian cancers. The study was published in PhysicsOrg.com by Theodore Widlanski, a biochemist at Indiana University, Bloomington. Read more about estrogen and breast cancer.