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

Cannabis is the most commonly used federally illegal drug in the United States, with an estimated 61.9 million people using it in 2022. 1 Cannabis use may have a wide range of health effects on the body and brain. 2 Click on the sections below to learn more about how cannabis use can affect your health.

Cannabis (/ ˈkænəbɪs /), [2] commonly known as marijuana (/ ˌmærəˈwɑːnə /), [3]weed, and pot, among other names, is a non-chemically uniform psychoactive drug from the Cannabis plant. Native to Central or South Asia, cannabis has been used as a drug for both recreational and entheogenic purposes and in various traditional medicines for centuries.

大麻 （英語： Cannabis、Marijuana） 學名：C annabis sativa，英文名：Marijuana、Cannabis、Hemp、Pot、Weed 為大麻科（Cannabaceae）、大麻屬植物的總稱，俗名：麻仔、老鼠尾。 是一种使用 大麻属 植物制成的 藥物，在 医疗合法化 的国家被视为醫療用藥，是使用雌性 大麻 的花與毛狀體晾晒製成的。 主要分為 寻常大麻 (Sativa) （Cannabis sativa）、 印度大麻 (Indica) （Cannabis indica）和结合两者特点的 杂交大麻 (Hybrid) （或称混合大麻，英語： …

2024年12月23日 · Marijuana — also called weed, grass, or pot, among other names — is a mind-altering substance that comes from the cannabis plant. It's one of the most used drugs in the U.S., especially...

2025年3月27日 · Marijuana, drug composed of the leaves and flowers of plants in the genus Cannabis. Marijuana is known by several other names, including pot, grass, and weed. It can vary widely in potency. Its active ingredient is tetrahydrocannabinol (THC). Learn more about the history, effects, and legality of marijuana.

2024年9月24日 · Cannabis, which some people call marijuana, refers to the dried leaves, flowers, stems, and seeds of the Cannabis sativa L plant. The plant contains at least 125 different cannabinoids, 1 including delta-9 tetrahydrocannabinol (THC). Delta-9 THC is the most abundant form of THC in the cannabis plant.

2024年11月7日 · 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 cigarettes, in pipes or water pipes, in blunts, and by using vaporizers that pull THC from the marijuana.

2023年6月22日 · Cannabis, weed, pot, and marijuana all refer to the same group of plants known for their relaxing and calming effects. However, effects vary depending on your mode of consumption and it’s...

2025年1月31日 · 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 compounds (or cannabinoids).