From an article at:https://goo.gl/0r8wLV
"Taken together, Δ9-THC elicits adverse psychological and physiological effects amongst users, while CBD has unique pharmacologic, physiologic, and behavioural effects with suggestions of salutary effects on brain substrates subserving anxiety, mood and sleep complaints."
Dr. Blair comment: This is all true above but the article does not take in account the brain enhancement effects that I see time and again in clients. Things like improved focus, clarity, reaction speed, memory recovery, humor and mood. I call these the "side benefits" since there is no toxicity or significant adverse reactions.