Medicinal cannabis treatments

Examples of significant evidence of the health benefits associated with consumption of medicinal cannabis can be found here: 

Medicinal uses of Marijuana and Cannabinoids

The Effect of Medicinal Cannabis on Pain and Quality-of-Life Outcomes in Chronic Pain: 

A Prospective Open-label Study

Effect of Medicinal Cannabis Therapy (MCT) on Severity of Chronic Low Back Pain, Sciatica and Lumbar Range of Motion