Tommy Chong (Cheech and Chong) was diagnosed with prostate cancer in June 2012. Tommy Chong started fighting his cancer by ingesting hemp oil. Ingesting hemp oil for only 1 month he is now cancer free. Hemp Will Save The World He encourages everyone to watch the documentary called Run From The Cure featuring Pot Activist Rick Simpson. This is the documentary that informed Tommy Chong about the cure for cancer using cannabis.