10 Major Health Benefits of Medical Marijuana, Marijuana is a harmless plant with full of good benefits 1)Treats Migraines 2)Shrinks Tumors 3)Relieves symptoms of chronic diseases 4)prevents Alzheimer’s 5)Treats Glaucoma 6)Prevents Seizures 7)Helps those with ADD & ADHD 8)Treats multiple Sclerosis 9)Helps relieve PMS 10)Helps Calm those