Tetrahydrocannabinol, commonly known as THC, is the primary psychoactive compound found in the cannabis plant. It interacts with the body's endocannabinoid system, particularly the CB1 receptors in the brain, leading to effects such as euphoria, relaxation, and altered sensory perception. In addition to its recreational use, THC has potential medicinal benefits. It may help alleviate symptoms such as chronic pain, nausea, and appetite loss, making it a focus of research in the fields of medicine and pharmacology. However, its use can also lead to side effects, including anxiety and impaired memory.