DR. SANJAY GUPTA: Smoking Is Not The Best Way To Consume Marijuana

Smoking a joint seems to be the most popular way of using marijuana.

Weed-infused cookies, brownies, and candies — called edibles — have also gained some popularity among recreational users. There's even a prescription medication that contains THC, called dronabinol, and sold as Marinol in the U.S.

But $4, a leading neurosurgeon and chief medical correspondent for CNN, says that, medically speaking, these are not the optimal ways to consume cannabis.

Dr. Gupta recently released a documentary, "$4," exploring the benefits of medical marijuana and its general effects on our brains and bodies.

Watch an excerpt from $4below, where he explains the advantages and disadvantages of the different ways to consume marijuana.

Produced by Kamelia Angelova & Robert Libetti