More Americans are increasingly seeing little harm in marijuana use.
A new study in the journal "Lancet Psychiatry" found that since 2002 more Americans are using some form of pot and finding it's not causing serious problems. Fifteen-percent said using marijuana once or twice a week had no risk whatsoever, a 10-percent jump. The study also found that people started to see marijuana as less harmful around the same time more states started to legalize it.
Still, many medical experts are calling for more research into the actual effects of marijuana.