How does it help?
Cannabinoids — the active chemicals in medical marijuana — are similar to chemicals the body makes that are involved in appetite, memory, movement, and pain.

Research suggests cannabinoids might:

Reduce anxiety
Reduce inflammation and relieve pain
Control nausea and vomiting caused by cancer chemotherapy
Kill cancer cells and slow tumor growth
Relax tight muscles in people with MS
Stimulate appetite and improve weight gain in people with cancer and AIDS
Can medical marijuana help with seizure disorders?
Medical marijuana received a lot of attention a few years ago when parents said that a special form of the drug helped control seizures in their children. So far, research hasn’t proved it works. But some epilepsy centers are testing a drug called Epidiolex, which is made from CBD, as a therapy for people with very severe or hard-to-treat seizures. In studies, some people had a dramatic drop in seizures after taking this drug.