We asked our oncologist about this only a few weeks ago. He said it has been around as a concept for a long time, but to date no peer reviewed clinical studies have been done to prove it works. A worry beacuse most things that work have the clinicians rushing to prove the effectiveness and get the treatment to patients. He also said that there were considerable risks involved - not sure if that was for all cancers or just to my husband with pancreas cancer. The risk is related to the need to heat the entire body to high temperatures and the consequences in doing this to very sick people. Hope this helps. He wasn't very encouraging to us, but we suspected it would be widely used by now if it was truly effective. ... View more