The fast will help children, just as it helps adults, only they do not need to fast so long. It will help the aged and make them feel young. (You need not be afraid to fast, no matter how old you are.) It is, of course, an immediate cure for fatness, and strange as it may seem, it is also a cure for unnatural thinness. People with ravenous appetites are just as apt to be thin as to be fat, because it is not what you eat that builds up your body, but only what you assimilate, and if you eat too much, you can make it impossible to assimilate anything properly. If you take a fast and break it carefully, your body will come to its normal weight, and all your functions to their normal activity. A physician wrote me, taking me to task for listing among the cures reported in my tabulation a case of locomotor ataxia. This disease, he explained, is caused because a portion of a nerve has been entirely destroyed, and it is a disease that is absolutely and positively and forever incurable. I answered that I knew this to be the teaching of present day medical science, but I invited him to consider for a moment what happens in nature. When a crab loses a claw, we do not take it as a matter of course that the crab must go about with one claw for the balance of its life; nature will make that crab another claw. Man has lost the power of replacing a lost leg, but he stills retains the power of replacing tissue which has been cut away by a surgeon's knife, and medical science takes this as a matter of course. How shall anybody say that nature has forever lost the power of rebuilding a bit of nervous tissue? How shall anyone say that if the blood-stream is cleansed of poisons, and the energy of the whole body restored, one of the results may not be the repairing of a broken nerve connection? I invite my readers who have ailments, and especially I invite all medical men among my readers, to make a fair test of the fasting cure. The results will surprise them, and they will quickly be forced to revise their methods of treating illness. XXVII DISEASES AND CURES (Discusses some of the commoner human ailments, and what is known about their cause and cure.) I begin with the commonest of all troubles, known as a "cold." This name implies that the cause of the trouble lies in exposure or chill. All the grandmothers of the world are agreed about this. They have a phrase--or at least they had it when I was a boy: "You will catch your death." Every time I went out in the rain, every time I played with wet feet, or sat in a draft, or got under a cold shower, I would hear the formula, "You will catch your death."