1. Marijuana helps fight cancer.
2. In fact, heavy marijuana use doesn't lead to lung cancer.
3. It's substantially less physically addictive than other drugs.
4. Two words: NO HANGOVERS.
5. Pot's medical benefits are corroborated by research.
6. Dr. Sanjay Gupta has tried marijuana — and recommends it.
He also apologized for dismissing the scientific value of medical marijuana use in the past.