There is much prejudice against fasting, because people do not understand what fasting is and what it accomplishes. Fasting is not starving. To fast is to go without food when the body is in such condition that food can not be properly digested and assimilated. To starve is to go without food when the body is in condition to digest and assimilate food and needs nourishment.
It is quite generally believed that if food is withheld for six or seven days the result will be fatal. Under proper conditions one can go without food for two or three months. Perhaps most people could not do without food for the latter period, but fasts of that duration are on record. Fat people can live on their tissues for a long time before they are reduced to normal weight, and slender ones can live on water for an extended period.
Prolonged fasts should not be taken unless necessary, and then they should be taken under the guidance of someone who has had experience and is possessed of common sense. If a person is fearful or surrounded by others who instill fear into him, he should not take a prolonged fast. The gravest danger during the fast is fear. It takes many weeks to die from lack of food, but fear is capable of killing in a few days, or even in a few hours. The healer who undertakes to direct fasts against the wishes of the patient's friends and relatives, who have more influence than he has, injures himself professionally and throws doubt upon the valuable therapeutic measure he advocates.
The indications that a fast is needed are pain and fever and acute attacks of all kinds of diseases. Some of the more common diseases that call for a complete cessation of eating are: The acute stage of pneumonia, appendicitis, typhoid fever, neuralgia, sciatica, peritonitis, cold, tonsilitis, whooping cough, croup, scarlet fever, smallpox and all other eruptive diseases; colics of kidneys, liver or bowels; all acute alimentary tract disturbances, whether of the stomach or of the bowels.
Sometimes it is necessary to fast in chronic diseases, especially when there is pain, but as a rule chronic diseases yield to proper hygienic and dietetic treatment without a fast, provided they are curable. Here is where many people who advocate fasting go to extremes. A fast is the quickest way out of the trouble, but it is at times very unpleasant. By taking longer time the result can be obtained by proper living and the patient is being educated while he is recovering. In chronic cases it is especially important to eat properly.
The only disease of which I know that seems to be unfavorably influenced by fasting is pulmonary tuberculosis in well advanced stages. Such patients quickly lose weight and strength on a fast, and they have great difficulty in regaining either. Perhaps others have had different experiences and have made observations that do not agree with this, for cases of tuberculosis have been reported cured through fasting. It is well to bear in mind that every case that is diagnosed pulmonary tuberculosis is not tuberculosis. Many supposed-to-be cases of tuberculosis, some of them so diagnosed by most reputable specialists, are nothing more than lung irritation due to the absorption of gas and acid from the digestive tract. When the indigestion is cured, the so-called tuberculosis disappears. These are the only tubercular cases that I have seen benefited by fasts, and the improvement is both quick and sure.
Doubtless tuberculosis in the first stages could be cured by fasting, followed by proper hygienic and dietetic care, for at first tuberculosis is a localized symptom of disordered nutrition. In this stage the disease is no more dangerous than many other maladies that are not considered fatal. The subjects brought to the dissecting table show plainly that a large proportion of them have at some time had pulmonary tuberculosis, the lesions of which were healed, and they afterwards died of some other affliction. However, if a patient is received after the manifestation of profuse night sweats, great flushing of the cheeks, high fever daily, emaciation, expulsion of much mucus from the lungs, and the presence of great lassitude and weakness, the rule is that the nutrition is so badly impaired that nothing will bring the patient back to normal. Under such circumstances fasting hastens death. The family and friends are not reticent about placing the blame on the healer. Moderate feeding will prolong life and add to the comfort of the sufferer. The customary overfeeding hastens the end.
Cancer is said to be cured by fasting, but this is very, very doubtful. It is often difficult to differentiate between cancer and benignant tumors at first. Benignant tumors frequently disappear on a limited diet. I have seen many tumors disappear under rational treatment, without resorting to the knife, but I have never seen an undoubted case of cancer do so, though some of the tumors in question had been diagnosed cancer. Cancers, in the advanced stages, end in the death of the patient in spite of any kind of treatment. By being very careful about the diet, cancer patients can escape nearly all the pain and discomfort that generally accompany this disease. Moderation would prevent nearly every case of cancer, and especially moderation in meat eating. It is a disease that should be prevented, for its cure is very doubtful.
Colds leave in a few days, with no bad after effects, if no food is taken.
Typhoid fever treated rationally from the start generally disappears in from one week to twelve days if nothing but water is given, and fails to develop the severity that it attains under the giving of foods and drugs. There are no complications.