Ulcer of the stomach is one of our most common diseases. Leading surgeons have shown that it is ten times as frequent as was formerly supposed. It is clearly of dietetic origin, and is usually associated with too high consumption of protein, and especially of meat. Starches, sugars, and fats are not digested in the stomach, and require no acid. Proteins, on the other hand, are digested within the stomach, and require for their digestion a high percentage of hydrochloric acid. The excessive production of acid within the stomach, stimulated by too much protein, is probably the chief cause of the formation of ulcers. In 1908, Dr. Fenton B. Turck, of Chicago, said before the American Medical Association: "Ulcer of the stomach is not found in those countries where the inhabitants eat rice. It is evidently a meat eater's disease. The zone of ulcer is in the meat eater's zone." Cancer is a disease of modern civilization. It is the one major unsolved problem in the field of medical science to-day. From the _Journal of the American Medical Association_ of June 14, 1913, we quote: "That cancer has increased in recent years is perhaps a commonplace, but the extent of the increase is not generally realized. Under existing conditions, one in seven women and one in eleven men die of cancer." In the _Medical Record_, issue of May 15, 1915, Dr. W. G. Mayo is quoted as saying: "Cancer of the stomach forms nearly one third of all cancers of the human body.... Is it not possible that there is something in the habits of civilized man, in the cooking or other preparation of his food, which acts to produce the precancerous condition?... Within the last one hundred years, four times as much meat is taken as before that time. If flesh foods are not fully broken up, decomposition results, and active poisons are thrown into an organ not intended for their reception, and which has not had time to adapt itself to the new function." Dr. L. Duncan Bulkley, senior physician to the New York Skin and Cancer Hospital, says on this point, "Analyzing the various data obtained, we find that cancer has increased in proportion to the consumption of four articles, meat, coffee, tea, and alcohol."