What Is THC?

THC (Delta-9-tetrahydrocannabinol) is the primary psychoactive compound in cannabis responsible for the plant's intoxicating effects. As one of over 100 identified cannabinoids, THC interacts with the body's endocannabinoid system by binding to CB1 receptors primarily located in the brain and central nervous system. Discovered in 1964 by Israeli chemist Raphael Mechoulam, THC has a molecular formula of C21H30O2. When heated through smoking, vaping, or cooking, the non-psychoactive precursor THCA (tetrahydrocannabinolic acid) converts to active THC through a process called decarboxylation. THC concentrations vary significantly across cannabis products. Traditional flower typically contains 15-25% THC, while concentrates can reach 70-90%. Hemp, legally defined as cannabis containing less than 0.3% THC by dry weight, remains federally legal under the 2018 Farm Bill. The compound produces effects including euphoria, altered perception, increased appetite, and potential therapeutic benefits. Research indicates THC may help with pain management, nausea reduction, and appetite stimulation, though comprehensive clinical studies remain limited due to federal scheduling restrictions. THC's legal status varies by jurisdiction. As of 2024, 38 states plus Washington D.C. have legalized medical cannabis, while 21 states permit recreational use. However, THC remains federally classified as a Schedule I controlled substance. Detection windows for THC metabolites depend on usage frequency and testing method. Urine tests can detect THC for 3-30 days, blood tests for 2-7 days, and hair follicle tests up to 90 days. Saliva tests typically show positive results for 1-3 days. The cannabis market has developed numerous THC delivery methods including flower, edibles, concentrates, tinctures, and topicals, each offering different onset times and duration of effects. Understanding THC content and potency helps consumers make informed decisions about cannabis products. *This information is for educational purposes only and should not be considered medical advice. Consult healthcare professionals for medical cannabis guidance.*