East Tennessee State University Researchers Have Linked Obesity To Prenatal Exposure To Cigarette Smoke. The Study Appeared In The Journal Of Pediatrics And Child Health. It Used Date From The National Institute Of Child Health And Human Development Between The Years Of 1991 And 2007. The Researchers Concluded That A Woman Who Smokes Or Is Exposed To Second Hand Smoke Before Or During Pregnancy Is More Likely To Have Children Who Become Obese During Their Teenage Years.