What is THC (Delta-9-THC) and what does it do?

Delta-9-tetrahydrocannabinol (THC) is the primary psychoactive compound in cannabis and the most well-studied cannabinoid. First isolated in 1964 by Israeli chemist Raphael Mechoulam, THC is responsible for the characteristic "high" associated with marijuana use. THC works by binding to cannabinoid receptors (CB1 and CB2) in the body's endocannabinoid system. CB1 receptors are concentrated in the brain and central nervous system, particularly in areas controlling memory, coordination, pleasure, and time perception. When THC activates these receptors, it produces euphoria, altered sensory perception, relaxation, increased appetite, and changes in cognition. Concentration levels vary significantly across cannabis products. Traditional flower typically contains 15-25% THC, while concentrates can reach 70-90%. Hemp-derived products must contain less than 0.3% THC by federal law. Modern cultivation techniques have dramatically increased potency - average THC levels in seized marijuana rose from 4% in 1995 to over 15% by 2013. THC's effects typically begin within minutes when smoked or vaporized, peaking at 30 minutes and lasting 2-4 hours. Edible products take 30 minutes to 2 hours to take effect but can last 6-8 hours due to liver metabolism converting THC to 11-hydroxy-THC, a more potent compound. Beyond recreational use, THC shows therapeutic potential for conditions including chronic pain, nausea, epilepsy, and appetite stimulation. However, it can also cause adverse effects like anxiety, paranoia, impaired motor coordination, and short-term memory issues. **Disclaimer: This information is for educational purposes only and does not constitute medical advice. Consult healthcare professionals before using cannabis for medical purposes. Cannabis laws vary by jurisdiction.**