This section is from the book "The Hygienic System: Fasting And Sun Bathing", by Herbert M. Shelton. Also available from Amazon: The Hygienic System Vol III Fasting and Sun Bathing.
There is no danger of the patient dying of starvation in the process of getting well. Let us bear in mind that the body is possessed of reserve food stores which will meet its needs for nutriment for a prolonged period. In acute "diseases" the body can supply its nutritive needs from these food reserves with less effort and with less waste of energy and substance than is required to supply them from raw materials.
We believe that man requires food all the time because we have learned to think of him as an engine or a machine that can run only so long as he is supplied with fuel. This absurd mechanistic view of life insists upon ignoring every prompting of instinct and treating man as an inanimate machine is treated.
Let the sick eat only when Nature calls for food. A large number of cases will recover, whether they feed or fast, but there is also a very large number of cases who will die, if they are fed, who would otherwise recover. To fast or to feed--this is often the issue of to live or to die.