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

    Mar 18, 2026 · Marijuana is known by a variety of other names, including pot, tea, grass, and weed. It is usually dried and crushed and put into pipes or formed into cigarettes (joints) for smoking.

  2. Marijuana: Effects on the Body - WebMD

    Dec 23, 2024 · What Is Marijuana? Marijuana — also called weed, grass, or pot, among other names — is a mind-altering substance that comes from the cannabis plant.

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

    Nov 5, 2023 · Marijuana is a mind-alerting substance that comes from the Cannabis sativa plant. Other names for it are weed, pot and dope.

  4. Where is marijuana legal in the US? See map ahead of 4/20

    2 days ago · Recreational marijuana is legal in 24 states and Washington, DC, as of June 2025.

  5. Know the Effects, Risks and Side Effects of Marijuana - SAMHSA

    Sep 9, 2025 · Marijuana is the most commonly used illegal substance in the U.S. and its use is growing. Marijuana use among all adult age groups, both sexes, and pregnant women is going up. At the …

  6. Marijuana - Mayo Clinic

    Aug 15, 2025 · People sometimes use cannabis to treat health conditions. This is known as medical cannabis, also called medical marijuana. Cannabis contains chemicals called cannabinoids, which …

  7. Find, order, and learn about weed | Leafly

    Leafly is the leading destination to learn about, find, and order cannabis. Learn more about types of weed strains and discover marijuana dispensaries near you.

  8. About Cannabis | Cannabis and Public Health | CDC

    Feb 15, 2024 · What we know about cannabis 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 …

  9. Marijuana: Effects, Medical Uses and Legalization - Drugs.com

    Marijuana is used as a psychoactive, mind altering recreational drug and for certain medical ailments. The active agent that leads to the "high" is THC (delta-9-tetrahydrocannabinol). According to the …

  10. Marijuana - DEA.gov

    Dry, shredded, green/brown mix of flowers, stems, seeds and leaves from the cannabis sativa plant. THC (delta-9-tetrahydrocannabinol) is the main ingredient that produces the psychoactive effect. …