The following states have medical marijuana laws enacted. Modern research suggests that cannabis is a valuable aid in the treatment of a wide range of clinical applications. These include pain relief, nausea, spasticity, glaucoma, and movement disorders. Marijuana is also a powerful appetite stimulant and emerging research suggests that marijuana’s medicinal properties may protect the body against some types of malignant tumors, and are neuroprotective. Select a state to get detailed information.