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  1. Cannabis - Wikipedia

    Industrial hemp textile products are made from cannabis plants selected to produce an abundance of fibre. Cannabis also has a long history of being used for medicinal purposes, …

  2. Cannabis (Marijuana) | National Institute on Drug Abuse (NIDA)

    Sep 24, 2024 · Cannabis refers to the dried leaves, flowers, stems, and seeds of the cannabis plant. The plant has many different chemical compounds, including tetrahydrocannabinol …

  3. Marijuana (Cannabis, Weed): What It Is, Side Effects & Risks

    Marijuana is a mind-alerting substance that comes from the Cannabis sativa plant. It has several short-term and long-term effects, many of which scientists are still studying.

  4. Marijuana | History, Effects, THC, & Legality | Britannica

    Dec 25, 2025 · marijuana, crude drug composed of the leaves and flowers of plants in the genus Cannabis. The term marijuana is sometimes used interchangeably with cannabis; however, …

  5. 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 …

  6. What Is Cannabis? Facts About Its Components, Effects, and Hazards

    Jun 22, 2023 · Today, more and more people are using the term cannabis to refer to weed. Read on to learn what cannabis is, and find a quick overview of its uses, legality, side effects, and …

  7. Marijuana and CBD Risks and Resources | SAMHSA

    Dec 3, 2025 · Marijuana use comes with risks to health. Today’s marijuana is stronger than ever before. States that have legalized marijuana regulate the drug in widely different ways ― and …

  8. Cannabis: Uses (Medical), Effects & Warnings - Drugs.com

    Cannabis contains the chemical compound THC (delta-9 tetrahydrocannabinol), which is believed to be responsible for most of the characteristic psychoactive effects of cannabis that leads to …

  9. Cannabis - Uses, Side Effects, and More - WebMD

    There are over 100 cannabinoids in cannabis, but THC and CBD are the most well-studied. Cannabinoids are found in the highest levels in the leaves and flowers of the plant. Cannabis …

  10. Cannabis (Marijuana) and Cannabinoids: What You Need To Know

    The word “marijuana” refers to parts of or products from the plant Cannabis sativa that contain substantial amounts of tetrahydrocannabinol (THC). THC is the substance that’s primarily …