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Dec 24, 2019 · Learn about the effects, uses, and risks of marijuana, a drug derived from the cannabis plant. Find out how marijuana affects the brain, body, and behavior, and what are the legal and medical issues surrounding it.
Cannabis. Cannabis, [a] also known as marijuana [b] or weed among other names, is a psychoactive 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.
- Central or South Asia
Learn what marijuana is, how it is used, and what chemicals it contains. Find out the difference between THC and other cannabinoids, and how they affect the brain and body.
May 8, 2024 · Learn about the crude drug composed of the leaves and flowers of plants in the genus Cannabis, also known as pot, tea, grass, and weed. Find out its physical and psychological effects, medical uses, chemistry, and legal status in different countries and states.
- The Editors of Encyclopaedia Britannica
- What is marijuana?Marijuana is a drug composed of the leaves and flowers of plants in the genus Cannabis. Documented as far back as 2700 BCE in China, marijuana has...
- What is the active ingredient in marijuana?Tetrahydrocannabinol (THC) is the active ingredient present in all parts of both the male and female marijuana plants, but it is most concentrated...
- What are the medical uses of marijuana?Medical research has found marijuana useful in lowering internal eye pressure in persons suffering from glaucoma and providing relief from nausea a...
- What are the effects of consuming or smoking marijuana?Marijuana’s effects vary, depending on the strength and amount consumed. Psychological effects can include mild euphoria, visual hallucinations, an...
- Are marijuana and cannabis the same thing?The word marijuana is sometimes used interchangeably with cannabis. However, cannibas refers specifically to the plant genus, which comprises Canna...
Nov 5, 2023 · Learn about marijuana, a mind-altering substance that comes from the Cannabis sativa plant. Find out how it can affect your brain, body and health, and what are the legal and medical implications of its use.
Feb 27, 2023 · Learn how marijuana use can harm your brain, mental health, athletic performance, driving, and baby's development. Find out the facts, statistics, and resources on marijuana addiction and treatment.
- DictionaryMa·ri·jua·na/ˌmerəˈ(h)wänə/
noun
- 1. cannabis, especially as smoked or consumed as a psychoactive (mind-altering) drug: "the cops told us that he had been smoking marijuana"
Jan 30, 2024 · 0:04. 1:18. For nearly two months, adults in Ohio have been able to legally use marijuana. But the state's recreational program remains in limbo as consumers wait for sales to begin and wonder if ...
