Medical marijuana is used for pain/ nausea, muscle spasms, anxiety, multiple sclerosis, low appetite, sleep problems, autism, epilepsy (seizure disorders), and other conditions.medical benefits of marijuana The health benefits of medical marijuana include relief from pain and muscle spasm, nausea associated with chemotherapy, and anorexia. Benefits are seen in immune function, neuroplasticity, emotional and mood regulation, vascular health and digestive function. Research […]