Also, people can take CBD WITHOUT the THC , or very low THC.  Many people, especially with chronic Lyme disease and other autoimmune diseases are having excellent success in symptom/pain control using CBD. 
As doctors should know, CBD inhibits the FAAH enzyme, a compound that activates the CB1 receptor. CBD reduces the activation of CB1 by THC, thus reducing its psychoactive effects. The activation of adenosine receptors by CBD is what gives the anti-anxiety and anti-inflammatory effects of CBD.