Since its introduction in the 1940s, the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) has been widely used to control weeds in agriculture, forestry, and urban and residential settings. According to documents obtained by public records requests, the U.S. Food and Drug Administration (FDA) forecast sharp increases in the levels of 2,4-D in American food after regulators approved … 2,4-D: Concerns about cancer and other serious illnesses