According to CBS News, a new study states that women who were exposed to DDT in the womb seem to be at a higher risk for being diagnosed with breast cancer compared to those women who were not exposed in the womb. Since DDT was banned in 1972, the study says that women born before this time are at a higher risk. The study, done by the Public Health Institute in Berkeley, California, looked at 20,000 pregnancies from 1959 to 1967. Of those 20,000 pregnancies, 9,300 were born female. The females involved in the study who were exposed to DDT had a 3.7 times higher risk of breast cancer when compared to those females who were exposed to the lowest levels of DDT. Researchers advice is for women to follow standard recommendations for screening and to be aware of the risk factors.