My brother was diagnosed with Non-Hodgkin's Lymphoma a years back and was incredibly ill for most of his chemotherapy. Doctors shuffled anti-nausea medications regularly looking for something that could keep him out of the bathroom after each therapy, but the only relief he found was marijuana.
Eventually, he got into a trial of Marinol, synthetic cannabinoids that entirely cured him of the effects of chemotherapy. And, it made him feel nice.
The more these stories like this one in Slate are told, the sooner the rest of the country will adopt medical marijuana officially and people like my brother and this autistic kid stop suffering.