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  1. Massachusetts law about recreational marijuana | Mass.gov

    Adult-use marijuana, Mass. Cannabis Control Commission. Provides key information on who can buy, who can use, how much you can carry on you, how much you can grow, where you can legally …

  2. Tetrahydrocannabinol - Wikipedia

    THC and its chemical formula (C 21 H 30 O 2) describe multiple isomers, [10] and the term THC popularly refers to dronabinol, the delta-9-THC isomer with chemical name (−)-trans-Δ9 …

  3. Delta-9-Tetrahydrocannabinol: What to Know About THC

    5 days ago · THC, or delta-9-tetrahydrocannabinol, is the best-known psychoactive compound found in marijuana. Learn more about the effects, medicinal uses, and risks of THC.

  4. What is THC? Which products experts deem safer - USA TODAY

    Jul 9, 2024 · What is THC? In plain terms, THC is the part of cannabis that gets you high. "People take and justify the use of cannabis medicinally for a wide range of reasons and ailments," he adds.

  5. What is THC? Benefits, uses, and safety - Leafwell

    Oct 8, 2025 · THC is short for tetrahydrocannabinol. It’s the main compound in cannabis, responsible for the intoxicating “high” you may feel when you consume some cannabis products.

  6. Tetrahydrocannabinol (THC): Everything You Need To Know

    Jan 5, 2024 · THC, or tetrahydrocannabinol, is the primary psychoactive compound in cannabis, responsible for the plant’s euphoric effects. When consumed, THC interacts with receptors in the …

  7. Cannabis Health Effects | Cannabis and Public Health | CDC

    Feb 16, 2024 · There are several risk factors and negative health outcomes associated with cannabis use.

  8. 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 …

  9. Understanding THC: What Is THC & Its Effects | Body and Mind

    Mar 4, 2025 · Tetrahydrocannabinol (THC) is the primary psychoactive compound produced by the Cannabis Sativa plant species, which means it is the cornerstone of cannabis’s effects. Also known …

  10. Tetrahydrocannabinol (THC) | Britannica

    Nov 29, 2025 · Tetrahydrocannabinol (THC), active constituent of marijuana and hashish that was first isolated from the Indian hemp plant (Cannabis sativa) and synthesized in 1965.