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  1. 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.

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

    Sep 9, 2025 · Marijuana is a psychoactive drug that contains close to 500 chemicals, including THC, a mind-altering compound that causes harmful health effects. People smoke marijuana in hand-rolled …

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

    Feb 13, 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.

  4. 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 …

  5. What to know about pot addiction and treatment | AP News

    It’s called cannabis use disorder and it’s on the rise, affecting about 3 in 10 people who use pot, according to the U.S. Centers for Disease Control and Prevention. Here’s how to know whether you …

  6. 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.

  7. Marijuana Legality by State 2025 | Where Is Weed Legal? | DISA

    Feb 3, 2026 · See where marijuana is legal in 2025. Interactive map shows state-by-state weed laws, medical and recreational use, and answers “can I smoke weed in…?”

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

    Consumption of marijuana leads to a psychoactive drug effect. Do not drive, operate machinery, or perform other hazardous activities while using cannabis (marijuana). It may cause dizziness, …

  9. 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 …

  10. Marijuana - Get Smart About Drugs

    Mar 12, 2025 · 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 …