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The psychoactive effects of cannabis, known as a "high", are subjective and vary among persons and the method of use. When THC enters the blood stream and reaches the brain, it binds to cannabinoid receptors .
The effects last for two to six hours, depending on the amount used. At high doses, mental effects can include anxiety, delusions (including ideas of reference), hallucinations, panic, paranoia, and psychosis. There is a strong relation between cannabis use and the risk of psychosis, though the direction of causality is debated.
THC is the psychoactive component in cannabis, and its effects are dose-dependent. In the past, researchers have proposed a standardized unit of 5 mg of THC for all cannabis products. Low-potency ...
A growing body of research and numerous anecdotal reports link cannabis with several health benefits.
Over time, the marijuana gateway hypothesis has been studied more and more. In one published study, the use of marijuana was shown not a reliable gateway cause of illicit drug use. [67] However, social factors and environment influence drug use and abuse, making the gateway effects of cannabis different for those in differing social circumstances.
Marijuana consumed decades ago had concentrations of THC, the main psychoactive ingredient, of 2 to 3%, but cannabis products today can have THC levels as high as 90%.
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 .
Cannabis has a longstanding reputation for helping people relax, but recent research has found it can have a negative impact on mental health. For that reason, it's understandable to have questions.