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  1. 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 …

  2. 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 …

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

    Dec 25, 2025 · 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 …

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

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

  5. 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 …

  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 - 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 …

  8. Marijuana is a mind-altering (psychoactive) drug, produced by the Cannabis sativa plant. Marijuana has over 480 constituents. THC (delta-9-tetrahydrocannabinol) is believed to be the …

  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. …

  10. Is Marijuana Addictive?: How Addictive is Weed?

    Apr 17, 2025 · Marijuana (cannabis) can be problematic for some individuals who use it. Despite relatively widespread perceptions that would suggest otherwise, frequent marijuana use is …