As medical science has learned more about the endocannabinoid system, discoveries show several conditions that appear to be related to dysregulation of the system, which is called clinical endocannabinoid deficiency (CECD).
Many properties in cannabis are synergistc. CBD and THC perform best for pain-relief and healing disease when they are used together. This is similar when you consider the terpenes and flavonoids, which are also part of the cannabis make-up. The entire plant is designed to work as a whole to produce the best effects.
Phytocannabinoids are naturally occurring chemical substances that interact with receptors in the brain. They occur naturally in the cannabis plant. Classical cannabinoids are formed through decarboxylation of their respective 2-carboxylic acids, a process which is catalyzed by heat, light, or alkaline conditions.