Eftir daglega notkun í nokkur ár eflaust, tímabundið, en áfengisneysla í slíku magni fer líka ílla með mann, jafnvel verr. “The long-term heavy use of cannabis does not produce the severe or grossly debilitating impairment of memory, attention, and cognitive function that is found with chronic heavy alcohol use” http://cfdp.ca/lancet2.htm