For the first time, the American Academy of Neurology said medical marijuana is an effective treatment for some symptoms of multiple sclerosis when given as an oral spray or a pill. However, there's not enough evidence to determine if smoking the drug is equally effective. Dr. Jon LaPook reports. Cannabis is a medicine and its use is a human right Subscribe & help translate, subtitle & share; use next link to subtitle/ translate www.youtube.com/timedtext_video?v=IoyWEztfnbI&ref=share All rights of this video belong to its producer CBS Source: www.youtube.com/watch?v=2ghSVEAAykI