Is CBD Really Non-Psychoactive?

By Jahan Marcu, Ali S. Matthews, and Martin A. Lee on May 17, 2016

Cannabidiol and the CB1 Receptor

Understanding how cannabidiol (CBD) exerts its myriad effects on human physiology is a work in progress. Thus far, scientists have identified more than 60 different molecular pathways through which CBD operates. It is known, for example, that CBD acts through multiple receptor-independent channels and it also binds to various receptors in the brain, including serotonin and 5HT1A (which contributes to CBD’s antidepressant effect), TRPV1 (which contributes to CBD’s anti-psychotic effect), the nuclear receptor PPAR-gamma (regulates gene expression), and the orphan receptor GPR55, among others.

CBD and tetrahydrocannabinol (THC) have similar molecular structures, but CBD does not directly stimulate CB1 and CB2, the canonical cannabinoid receptors, like THC does. THC, marijuana’s principal psychoactive component, makes a person feel high by binding to CB1, the most abundant protein receptor in the brain and central nervous system...