Gonzalez continued his observations intermittently for five more years, wrote up his findings, but did not publish them. According to Kelley, all cancers are one disease caused by a deficiency of protein digestive enzymes, which allows cancer cells to grow. An excess of female hormones brings about this change. Both men and women have sex hormones and when the delicate male-female sex hormone balance is upset, a cancer starts. Thus cancer is the growth of normal tissue, i.e. basic germ cells, in the wrong place.
Cancer progresses because there is lack of cancer-digesting enzymes in the body.
It was also followed by Ernst Krebs Jr., developer of Laetrile. The test is a questionnaire filled out by the patient. Kelley warned that while halting the growth of cancer is relatively simple, only those who followed his treatment program for the rest of their lives would benefit because the body must be continuously cleared of toxins. Since the proposed cause of death from cancer was from toxins in waste products given off by tumor tissue, they must be eliminated by laxative purging with epsom salts, fasts, and enemas with coffee, fermented milk, or lemon juice. Successful detoxification was said to take three weeks to twelve months.