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Marijuana use in the United States is three times above the global average, but in line with other Western democracies. Forty-four percent of American 12th graders have tried the drug at least once, and the typical age of first-use is 16, similar to the typical age of first-use for alcohol but lower than the first-use age for other illicit drugs.
While psychoactive drugs are typically categorized as stimulants, depressants, or hallucinogens, cannabis exhibits a mix of all of these effects. Scientific studies have suggested that other cannabinoids like CBD may also play a significant role in its psychoactive effects.
The principal psychoactive substance in Cannabis, tetrahydrocannabinol (THC), contains no nitrogen, unlike many (but not all) other psychoactive substances [a] and is not an indole, tryptamine, phenethylamine, anticholinergic (deliriant) or dissociative drug.
Delta-9-tetrahydrocannabinol, or THC — the main psychoactive compound in weed that provides the euphoria often associated with cannabis use — can be detected in urine for up to three days ...
A psychoactive drug, mind-altering drug, or consciousness-altering drug is a chemical substance that changes brain function and results in alterations in perception, mood, consciousness, cognition, or behavior. [1] The term psychotropic drug is often used interchangeably, while some sources present narrower definitions.
It may be easy to assume that cannabis use causes psychosis. But evidence suggests there are several other plausible connections, write David Nathan and Peter Grinspoon
Cannabis also has a long history of being used for medicinal purposes, and as a recreational drug known by several slang terms, such as marijuana, pot or weed. Various cannabis strains have been bred, often selectively to produce high or low levels of tetrahydrocannabinol (THC), a cannabinoid and the plant's principal psychoactive constituent .
It is the principal psychoactive constituent of cannabis and one of at least 113 total cannabinoids identified on the plant. Although the chemical formula for THC (C 21 H 30 O 2 ) describes multiple isomers , [ 10 ] the term THC usually refers to the delta-9-THC isomer with chemical name (−)- trans -Δ 9 -tetrahydrocannabinol .