CBD interacts with the endocannabinoid system, a network in the body that helps regulate many functions, including digestion, metabolism, mood, memory, sleep, motor control, pain perception, immune function, fertility, and pregnancy. Pain, anxiety, and depression are the top three conditions for which people report taking CBD. In addition, CBD effectively reduces seizures in two types of pediatric epilepsy. A liquid CBD anti-seizure drug, Epidiolex, was approved by the FDA in June 2018.