There is thusfar no direct evidence linking weed to any side effects besides being intoxicated and the short term memory issues that come from difficulty with concentrating on anything while high.
It is physically impossible to smoke enough THC to overdose. Also, cancer from tobacco is thought to come partially from the radioactive pesticides and fertilizers they use to cultivate tobacco crops. Weed is not grown with these. [ WittyUsernameHere's advice column | Ask WittyUsernameHere A Question ]
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