This gene encodes one of two cannabinoid receptors. The cannabinoids, principally delta-9-tetrahydrocannabinol and synthetic analogs, are psychoactive ingredients of marijuana. The cannabinoid receptors are members of the guanine-nucleotide-binding protein (G-protein) coupled receptor family, which inhibit adenylate cyclase activity in a dose-dependent, stereoselective and pertussis toxin-sensitive manner. The two receptors have been found to be involved in the cannabinoid-induced CNS effects (including alterations in mood and cognition) experienced by users of marijuana. Multiple transcript variants encoding two different protein isoforms have been described for this gene.,CNR1,CANN6,CB-R,CB1,CB1A,CB1K5,CB1R,CNR,Cancer,Endocrine & Metabolism,Lipid Metabolism,Cholesterol Metabolism,Neuroscience,Cardiovascular,Heart,Lipids,Cardiovascular diseases,Heart disease,CNR1