Cannabis (drug) - Wikipedia
Tetrahydrocannabinol (THC) is the main psychoactive component of cannabis, which is one of the 483 known compounds in the plant, including at least 65 other cannabinoids, such as cannabidiol (CBD). …
Marijuana (Cannabis, Weed): What It Is, Side Effects & Risks
Marijuana: This term refers to parts of or products from the Cannabis sativa plant that contain substantial amounts of tetrahydrocannabinol (THC). This is the main chemical (cannabinoid) that causes mind …
Marijuana | History, Effects, THC, & Legality | Britannica
Dec 25, 2025 · 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 long been …
Marijuana: Effects, Medical Uses and Legalization - Drugs.com
Marijuana and Cannabis information from Drugs.com, Including marijuana uses, side effects, and legal status.
The Effects, Risks and Side Effects of Marijuana (Weed ...
Sep 9, 2025 · Marijuana refers to the dried leaves, flowers, stems, and seeds from the Cannabis sativa or Cannabis indica plant. Marijuana is a psychoactive drug that contains close to 500 chemicals, …
Marijuana: Effects on the Body - WebMD
Dec 23, 2024 · Explore the impact of marijuana on your mental and physical well-being. Learn about the effects of weed on your mind and body.
Cannabis (Marijuana) | National Institute on Drug Abuse (NIDA)
Sep 24, 2024 · In recent years, there have been big increases in the variety of cannabis products and how much THC they have, as well as a greater variety of ways people can consume them. Unless …