What are cannabinoids?

Authors: SCIRE Community Team | Reviewer: Andrea Townson and Janice Eng | Published: 2 April 2019 | Updated: Apr 20, 2020

Cannabis has its unique properties because of naturally-occurring chemical compounds within the plant called cannabinoids. Cannabinoids act on receptors on the surface of cells called cannabinoid receptors, causing effects on body processes like pain, memory, appetite, and immune responses.

Diagram categorizing cannabinoids into endocannabinoids (produced in the body), phytocannabinoids (produced by the cannabis plant), and synthetic cannabinoids (synthesized in a lab)

There are various sources of cannabinoids, both natural and synthetic.2

Cannabinoids occur naturally within the body (endocannabinoids), in cannabis plants (phytocannabinoids), and can also be synthesized in a lab (synthetic cannabinoids). There are more than 60 cannabinoids present in cannabis, with the most well-known being Delta-9-tetrahydrocannabinol (commonly known as THC), which is responsible for many of the psychoactive effects for which cannabis is known such as creating a “high” or sense of euphoria. Other cannabinoids, like Cannabidiol (also known as CBD), are not psychoactive and may have different effects such as improving mental health concerns and preventing oxidative damage although evidence for this is currently not conclusive. Because of these benefits over THC as well as the reduced health risks, CBD is believed to be the component of cannabis that gives rise to its medicinal potential and opposes the negative psychiatric effects associated with THC.

The chemical structures of THC and CBD

The chemical structures of THC and CBD.3