The evidence isn't conclusive, but it seems to be leaning towards no? There appear to be links between weed usage and schizophrenia, for one thing. Why is the left and the media continually pushing to legalize weed in more and more states?
the pharmaceuticals don't want the competition and reduced revenue legalization could bring. a lot of cronyism with them/lobbyists/government. even more so since the research is made difficult.
