DDT, an abbreviation of dichlorodiphenyltrichloroethane, is a synthetic insecticide developed in the 1940s. It was initially used as an effective method to wipe out mosquito, lice and flea populations (who carry typhus, malaria and yellow fever), then widely used as an insect control in crop and livestock production. Because of its effectiveness, DDT became highly successful worldwide. However, in the late 1950s and 60s, regulatory action was put in place to prohibit the use of DDT due to the mounting evidence of its adverse environmental and health effects. Evidence from multiple studies suggests that DDT is carcinogenic, linked to breast and other cancers, male infertility, miscarriages, nervous system and liver damage. It is also known to bioaccumulate and is highly persistent in the environment.DDT was banned in 2004 for agricultural uses worldwide by the Stockholm Convention on Persistent Organic Pollutants, although use continues in India and North Korea, and possibly elsewhere.