be the best medication. i really hope so. we're not there yet. >> the answers might come from places like this. it's a state-run nursing home outside of tel aviv. residents here are using marijuana for pain, loss of appetite, parkinson's disease, and dementia. moshe root is one of those residents. he was 77 when he smoked his first pipe of marijuana. he is 80 now, and he smokes a couple of pipes a day. it's to help with the pain and the hand tremors caused by stroke. >> it's a mixture of tobacco and marijuana. >> he even decided to light up during our interview to stop his hands from shaking. >> you are saying your hands are steady because of the marijuana? >> it also helped ease a deeper pain hidden from sight. you see moshe is a holocaust survivor.