Weed 3: The Marijuana Revolution

Dr. Sanjay Gupta puts medical marijuana under the microscope.

Dr. Sanjay Gupta is an American neurosurgeon and a chief medical correspondent for CNN. If you remember, Dr. Gupta admitted he was all wrong about weed back in 2013. Nowadays he’s changed his mind and he’s ready for a marijuana revolution so that medical patients can receive the medicine they need.