CNN Press Room

Once considered a more underground activity, cannabis has become increasingly popular over the years, resulting in legalization to grow, sell and smoke it in states like Colorado and Washington. Cannabis has become one of the most controversial topics in America, but just decades ago it was a legitimate medication. No matter the circumstance, the debate over cannabis still exists and one question remains the same: is marijuana bad for you or, could it actually be good for you?

In ‘Weed’, a three part documentary, CNN’s chief medical correspondent Dr. Sanjay Gupta spends nearly a year traveling the globe to shed light on the debate.

While it is part of a lifestyle for some, it is a lifeline for others including five-year-old Charlotte Figi. Charlotte suffers from a rare condition called Dravet’s syndrome, making her prone to up to 300 seizures per week. Like many people who use cannabis for medicinal purposes, parents Paige and Matt Figi tried every other option before resorting to this type of prescription. Dr. Gupta follows their journey.

Gupta takes viewers to Colorado where weed dispensaries and pot cafes have become the norm. Dealers, doctors, users – Gupta meets with various people, like the Figis, offering a raw insight to what’s been dubbed “The Green Rush.” He also talks to experts about whether cannabis can be addictive—and whether it can contribute to long-term damage in the brain.

Gupta’s final stops are in Tel Aviv and Jerusalem where he meets with some of the pioneers behind cannabis study, offering access to decades of innovative and cutting-edge research.