Vegetal marijuana, animal marijuana

Marijuana is the illicit drug most commonly used worldwide. The mechanisms by which this drug affects the brain have been studied exhaustively during the last 40 years, and better understood in the last decade. For example, the discovery of receptors to which marijuana binds, has been a major achievement in neurosciences and in the study of drug addiction. Moreover, the description of the endogenous ligands, the endocannabinoids, has shed light to the physiology of the brain regulating several behaviors: from pain to pleasure and from sex to thinking. For all these exciting effects, endocannabinoids are an important target for therapeutic endeavors.