Endocannabinoids (endogenous cannabinoids) are a type of neurotransmitter made by the body, and are part of a larger system known as the Endocannabinoid System (ECS). The endocannabinoid system acts like an internal balancing mechanism, constantly keeping a vast range of bodily functions in equilibrium. The body produces endocannabinoids that modulate various biological processes throughout the body, giving wide-ranging effects on everything from fertility to pain.