Marijuana use in the United States dates back to the 1600s. Before being introduced as a recreational drug in the early 1900s, hemp, a variety of the cannabis plant, was used to produce products such as rope and cloth.
Studies into the use of the substance in the 1930s associated it with crime and violence. Despite this research being disputed by a 1944 report by the New York Academy of Medicine, marijuana has been, until relatively recently, widely stigmatized as a “gateway drug.”
However, attitudes are changing. Although the substance is