Oxygen therapy introduces substances into the body that are supposed to release oxygen, and oxygen is believed to increase the body's ability to destroy disease-causing cells (“Oxygen Therapy”) . Oxygen therapy is based on the concept that cancer is caused by a lack of oxygen, which has not been proven. Oxygen treatments can be very harmful in some cases and have failed to eliminate cancer in many patients. There are also several cases that have proven that oxygen therapy works, but it depends on the cancer and the person. It is imperative to consult a doctor who specializes in oxygen treatment