This news is delayed. Get access to this information before it is priced into the market with a real-time news feed for only $1. Critics of the legal marijuana market argue that we don't know enough about the drug to confirm that it's medical benefits outweigh the risks. Others worry that making marijuana legal for recreational or medicinal purposes will convey the message that the drug is generally safe when actually it may be dangerous. New studies published in the Journal of the American Medical Association's JAMA Psychiatry suggest that those worries may not be unfounded. Brain Effects Limited The effects that marijuana has on a user's brain have... More