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.
The pancreatic and intestinal juices are reasonably thought to be secreted in reduced quantities. It is known that they are weaker in digestive power than normally, but little else is known concerning them. They are customarily secreted and poured into the intestine in response to the need for them and, when no need exists, little or no juice is secreted. What secretion is present is probably lacking in enzymes.
It is usual for a female hibernating bear to bring forth her young and secrete sufficient milk to maintain her cubs. The human mother is not so fortunate. Fasting occasions a rapid reduction in milk secretion and for this reason should be resorted to during lactation only when urgently necessary.
The sweat is foul and in rare cases profuse. Under ordinary circumstances sweating can hardly be regarded as an eliminating process, but apparently there is increased elimination through the skin during a fast.
During a fast some patients will throw off an almost incredible amount of thick, tough, transparent, white, gelatinous and slimy expectoration. Later this may become gray, yellowish or greenish and pus-like in quality. The discharge from the nose may also increase at first and then gradually lessen. In chronic bronchitis, asthma, etc., the same gradual cessation of the catarrhal condition and of the cough and expectoration occurs. The discharge from the nasal sinuses gradually ceases as the catarrhal condition ends. In cases of "diseased" and long abused stomachs such matters may be thrown out by the gastric mucosa and vomited. Thus we see how nature adopts every possible avenue of elimination as a means of cleansing the system. In cases of mucous colitis, the amount of long, tenacious, worm-like ropes of mucus that will be passed is astounding. After a time this ceases and the "disease" is ended.
Acid secretions of the vagina, leuchorrheal discharges, etc., soon cease and the secretions become normal through fasting. The foul stench that comes from the vagina and womb of the woman suffering from female troubles, or tumor of the womb, soon ceases and the odor becomes normal.