As marijuana becomes legal in more and more jurisdictions, doctors are grappling with the health risks that weed still does pose.

Its biggest threat is to your lungs.

"We’re kind of saying to people, ‘We think there’s some stuff that cannabinoids will be helpful for," addiction expert Paul Farnan said about more doctors prescribing weed. "Why don’t you just smoke cannabis?’ First of all, cannabis is actually a really dangerous thing for your lungs."

“Rectally is actually a lot more preferred because of the volume of absorption. You can put a lot more and it gets absorbed a lot better, but not everybody is open to this way of administration,” Mikhail Kogan, medical director of the Center for Integrative Medicine at George Washington University in Washington, D.C, explained.