RT Journal T1 DAngers of fasting JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1929 FD February 23 VO 92 IS 8 SP 651 OP 652 DO 10.1001/jama.1929.02700340051017 UL http://dx.doi.org/10.1001/jama.1929.02700340051017 AB Of the various environmental factors on which man depends for existence and growth, the diet particularly is amenable to manipulation. One may eat as much or as little as one wishes of good food or bad. The exercise of this privilege has led to striking dietary extremes, exemplied on the one hand by the gourmands of the Middle Ages and, on the other, by those who deprive themselves of all food for weeks at a time. The present-day ritualistic practice of fasting has a long history, while voluntary abstinence from food as a therapeutic measure is likewise extremely old. The Egyptians are said to have been the first to attribute disease to some agent taken by mouth, a kind of food poisoning. Since the pathogenic substance reached the body through the gastro-intestinal tract, the logical way to shield the organism against disease was to refrain from eating for a period