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
Nov 5, 2023 · 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) …
Marijuana | History, Effects, THC, & Legality | Britannica
Nov 13, 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 use for many starts as coping mechanism, becomes ...
Nov 25, 2025 · Once celebrated as a safe alternative to alcohol or a tool for relaxation and healing, marijuana has quietly become a source of dependence for many — especially amid the spread of …
Marijuana - Mayo Clinic
Aug 15, 2025 · There are more than 100 active compounds in cannabis. The most common cannabinoids are delta-9 tetrahydrocannabinol, also called THC, and cannabidiol, also called CBD. …
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 …
About Cannabis | Cannabis and Public Health | CDC
Feb 15, 2024 · Cannabis, which can also be called marijuana, weed, pot, or bud, refers to the dried flowers, leaves, stems, and seeds of the cannabis plant. The cannabis plant contains more than 100 …