Cannabinoids Linked to Colon Cancer Prevention:
http://health.supertxt.net/html/Health/1555.html
Interferon-based therapy for chronic hepatitis C virus (HCV) infection is often limited by side effects including flu-like symptoms, fatigue, insomnia, loss of appetite, nausea, muscle and joint pain, and depression, which can lead to poor adherence, dose reduction, or treatment discontinuation.
Medicinal cannabis may relieve such side effects and help patients stay on treatment, according to a study published in the October 2006 European Journal of Gastroenterology and Hepatology.
..and finally, an example of the ongoing conflict btween US Federal and State Laws:
DEA Raids State Medical Marijuana Dispensary