The U.S. has an incoherent national drug policy. While states pass laws permitting the possession, sale, and distribution of marijuana for either medicinal or recreational purposes, Federal Law still prohibits the possession, sale and distribution of marijuana for any reason in all 50 states.

For those who are undecided between complete prohibition of marijuana and fully legalizing it, tune in. My guest, Robert MacCoun of the Stanford Law School and the co-author of Drug War Heresies: Learning from other Vices, Times, and Places, does a masterful job of analyzing the pros and the cons of marijuana legalization. And for those of you that are absolutely convinced you’re right on either side of the marijuana legalization issue, please stick around. By the end of this show, you may change your mind-in either direction.

While much of the public conversation regarding legalization of cannabis is about its potential medicinal properties, the vast majority of Americans currently using marijuana are admittedly not using it for medicinal purposes. Today, we move beyond the discussion of the purported medical benefits, and Dr. Kai MacDonald examines five brain-based risks of cannabis in recreational users.