Before we discuss the interaction between these two cannabinoids, we'll need to understand how they work individually.
THC, short for
tetrahydrocannabinol, is a compound found in cannabis (hemp and marijuana) that consists of 21 carbon atoms, 30 hydrogen atoms, and two oxygen atoms. There are
various forms of THC with nuances in effects based on the location of the double bond on their molecule. For instance,
Delta-9 THC has a bond on its ninth carbon chain, and
Delta-8 THC on its eighth carbon chain.
THC offers
psychoactive effects because it resembles a compound our bodies naturally produce called "anandamide."
Anandamide, whose name comes from the Sanskrit word for "bliss," is a chemical messenger used in
our endocannabinoid system. This neurotransmitter binds to the
CB1 receptors in the brain where it plays a role in functions like sleep, memory, pain perception and even appetite.
Due to THC's striking resemblance to anandamide, it can bind to the same receptors, offering relaxation, contentment, increased aesthetic appreciation, laughter, and other effects.
CBD is short for cannabidiol. Like THC, it consists of 21 carbon atoms, 30 hydrogen atoms, and two oxygen atoms. However, CBD is an isomer of THC, meaning it's made of the same building blocks but in a different structure.
Regarding its mechanisms and effects, CBD has a
minimal binding affinity to the CB1 and CB2 receptors of the endocannabinoid system. However, CBD can
enhance or inhibit the activation of other receptors in the human body. For instance, according to
research published in 2020, CBD can
improve the activity of serotonin (one of the brain's "happy chemicals") 1A receptors. However, CBD's interaction with the body changes when you add THC.
Scientific Findings on THC + CBD