Some search terms to try when searching databases for this topic:
Drug Abuse Statistics
Marijuana Legality United States
Legalization of Marijuana
Addiction: A chronic, relapsing disorder characterized by compulsive (or difficult to control) drug seeking and use despite harmful consequences, as well as long-lasting changes in the brain. In the past, people who used drugs were called “addicts.” Current appropriate terms are people who use drugs and drug users.
Decriminalization: the process of ceasing to treat something as illegal or as a criminal offense.
Harm Reduction: a range of public health policies designed to lessen the negative social and/or physical consequences associated with various human behaviors, both legal and illegal.
LD50 / Median Lethal Dose: In toxicology, the median lethal dose is a measure of the lethal dose of a toxin, radiation, or pathogen.
Legalization: the process of removing a legal prohibition against something currently illegal.
Medical Marijuana: Cannabis that is prescribed by a physician for a patient.
Physical dependence: Adaptation to a drug that produces symptoms of withdrawal when the drug is stopped.
Public Health: the health of the population as a whole, especially as the subject of government regulation and support.
Tolerance: A reduced response to a drug, requiring more of the drug to experience the same effect.