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This is an accepted version of this page This is the latest accepted revision, reviewed on 17 November 2024. Number referring to cannabis 420 originally "4:20 Louis" Statue of Louis Pasteur at San Rafael High School, by Benny Bufano (1940), site of the earliest 4:20 gatherings in 1971 Observed by Cannabis counterculture, legal reformers, entheogenic spiritualists, and general users of cannabis ...
Cannabis smoking (known colloquially as smoking weed or smoking pot) is the inhalation of smoke or vapor released by heating the flowers, leaves, or extracts of cannabis and releasing the main psychoactive chemical, Δ 9-tetrahydrocannabinol (THC), which is absorbed into the bloodstream via the lungs.
Cannabis smoke was listed as a cancer agent in California in 2009. [31] A study by the British Lung Foundation published in 2012 identifies cannabis smoke as a carcinogen and also finds awareness of the danger is low compared with the high awareness of the dangers of smoking tobacco particularly among younger users. Other observations include ...
A cloud of marijuana smoke rises as a clock hits 4:20 p.m. during the Mile High 420 Festival in Denver on "weed day" in 2022. - Patrick T. Fallon/AFP/Getty Images/File
For some, marijuana can also be a great way to relieve some tension and potentially some stress acne. Stress and anxiety increases a hormone called cortisol that can, over time, spike inflammation ...
Using marijuana as little as once per month is associated with a higher risk of both heart attack and stroke, according to a large study published Wednesday by researchers from Massachusetts ...
A 2012 review of cannabis use and dependency in the United States by Danovitch et al said that "42% of persons over age 12 have used cannabis at least once in their lifetime, 11.5% have used within the past year, and 1.8% have met diagnostic criteria for cannabis abuse or dependence within the past year. Among individuals who have ever used ...
Dr. Phil also expressed his belief that smoking marijuana can cause a "multi-point drop" in a person's IQ, in addition to implying that the drug's use can be associated with violent behavior ...