Again RxCowboy you are exactly right...their is not such thing as "Medical" marijuana. Its all marijuana. We do not yet know the long term effects of "recreational" marijuana let alone "medical" marijuana. The CDC warned recently that synthetic marijuana( a highly concentrated form of marijuana) has been reported to cause kidney failure in young users across the country. Since most users of "recreational" marijuana are not tested for declining kidney function (GFR) we do not know if "recreational"marijuana can cause kidney failure or not.