Cannabinoids are the medically beneficial compounds in Cannabis. The human body has receptors for cannabinoids in the brain, creating various effects when consumed. The most famous cannabinoid in Marijuana is THC (delta-9-tetrahydrocannabinol), this is the psychoactive component of marijuana. Another common cannabinoid is CBD (Cannabidiol), this is being researched to prevent seizures and cancer growth among other things. There are over 85 known cannabinoids in Marijuana, their medical benefits are still poorly understood.