DDT is an abbreviation of dichlorodiphenyltrichloroethane. It was widely used as an insectidice throughout the United States, until its use was banned in 1973. Its use was banned as it was found to have signifiant health and reproductive impacts on other animal populations, including humans, and is extremely persistent in the environment. Even though it was banned almost 40 years ago, many Americans still have DDT in their bodies.

Learn more about the history of DDT: Science Clarified

ATSDR’s ToxFAQs reviews exposure sources, health effects, and ways to reduce exposures.

DDT and Breast Cancer Risk – Timing of exposure is important. Read the study by Cohn et al that found a five-fold increase in tisk of developing breast cancer with DDT exposure occurring during breast development.