It relieves the symptoms of multiple sclerosis
Multiple sclerosis (MS) is a chronic and incurable disease of the central nervous system. It manifests itself, among others motor, sensory, psychiatric disorders and painful muscle cramps. According to a 2009–2012 study by researchers from the Peninsula Medical School in Plymouth, on a group of 500 patients, marijuana may play a role in relieving pain symptoms in MS. Patients exposed to THC in the form of pills tolerated pain better, they also experienced weaker contractions and less muscle stiffness. The administered preparation did not cause any psychoactive effects, because it contained THC in a much lower amount than marijuana. Also, a study by scientists from the University of California on a group of 30 people showed a beneficial effect of "ganja" on the symptoms of MS. Three days of smoking marijuana once a day reduced muscle spasticity (excessive tension) by 30 percent. This effect turned out to be much better than when using traditional drugs.