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  2. Effects of cannabis - Wikipedia

    en.wikipedia.org/wiki/Effects_of_cannabis

    Marijuana 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 ...

  3. Timeline of cannabis laws in the United States - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_cannabis_laws...

    The legal history of cannabis in the United States began with state-level prohibition in the early 20th century, with the first major federal limitations occurring in 1937. Starting with Oregon in 1973, individual states began to liberalize cannabis laws through decriminalization. In 1996, California became the first state to legalize medical ...

  4. History of cannabis - Wikipedia

    en.wikipedia.org/wiki/History_of_cannabis

    Some U.S. states have legalized marijuana, but Peter Reuter argues that restricting promotion of marijuana once it is legal is more complex than it may initially appear. [ 80 ] The United Nations' World Drug Report stated that cannabis "was the world's most widely produced, trafficked, and consumed drug in the world in 2010", identifying that ...

  5. Legal history of cannabis in the United States - Wikipedia

    en.wikipedia.org/wiki/Legal_history_of_cannabis...

    In the United States, increased restrictions and labeling of cannabis (legal term marijuana or marihuana) as a poison began in many states from 1906 onward, and outright prohibitions began in the 1920s. By the mid-1930s cannabis was regulated as a drug in every state, including 35 states that adopted the Uniform State Narcotic Drug Act. [ 1 ]

  6. Cannabis smoking - Wikipedia

    en.wikipedia.org/wiki/Cannabis_smoking

    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.

  7. Cannabis consumption - Wikipedia

    en.wikipedia.org/wiki/Cannabis_consumption

    Cannabis. Cannabis consumption refers to the variety of ways cannabis is consumed, among which inhalation (smoking and vaporizing) and ingestion are most common. All consumption methods involve heating the plant's THCA to decarboxylate it into THC, either at the time of consumption or during preparation. Salves and absorption through the skin ...

  8. Cannabis drug testing - Wikipedia

    en.wikipedia.org/wiki/Cannabis_drug_testing

    THC, the main psychoactive component of cannabis, may only be detectable in saliva and oral fluid for 2–24 hours in most cases. [8] [9] The main metabolite excreted in the urine is 11-Nor-9-carboxy-THC, also known as THC-COOH. Most cannabis drug tests yield a positive result when the concentration of THC-COOH in urine exceeds 50 ng/mL. [10]

  9. Cannabis (drug) - Wikipedia

    en.wikipedia.org/wiki/Cannabis_(drug)

    Cannabis, [ b ] also known as marijuana, [ c ]weed, pot, or hemp, among other names, is a non-chemically uniform drug from the cannabis plant. Native to Central or South Asia, the cannabis plant has been used as a drug for both recreational and entheogenic purposes and in various traditional medicines for centuries.