J.R. S. answered 06/24/19
Ph.D. in Biochemistry--University Professor--Chemistry Tutor
It reacts with the various cannabinoid receptors present in the body. These are the endocannabinoid receptors, CB1, CB2 etc. The mechanism is too complex for discussion here, but you can search the terms endocannabinoids, cannabinoid recpetors, etc. to read more about this.