Not sure if this helps you. but this may be the reason they don't speak about it!
Another Miracle Cure: Fasting
The Watchtower also pushed the quack "Ehret system of elimination" which blamed diseases on the alleged "ten pounds of uneliminated fecal matter which most persons carry around with them throughout life." The Ehret system also teaches that drugs (a term never defined) are stored up in the body like food wastes, causing the person's health to become "serious or even dangerous when these poisons enter his circulation," a condition which can occur when the person fasts (Woodworth 1929: 399). Ehret advocated the "milk diet" which works because "abandoning three 'square' meals a day gives the intestines a chance to partially rest and eliminate some of the obstructions" (Woodworth 1929: 400).
The Watchtower spent much effort on discussing the virtues of elimination and fasting almost as if fasting were the solution to our every health problem because by not eating the intestines will be perfectly clean and never have to work thus will never need a rest. Poor health is partly due to "too much dissolved mucous and probably old drugs in the circulation" (Woodworth p. 400). Weakness, disturbed sleep and bad dreams, Ehret concluded, are caused by the "poisons passing through the brain" (Woodworth 1929: 401). In short, the Ehret system teaches "there is but one disease, and that is constipation" (Barnes 1929: 434).
Among the Watchtower's wilder conclusions was the mistaken belief that secreting mucous is a "cleansing" process that works like soapy suds helping to clean dishes. If the mucous accumulations are great enough, the condition "may be diagnosed as influenza" (1929 p. 434). If the eliminating works deeper into the body's system, Ehret concluded, mucous and poisons are loosened in the amount that they slow circulation down to the degree that it has to work "under great friction, similar to a dirty machine" or a car trying to move with its brakes on (1929: 434). If sugar or albumin is found in the urine, the disease is called diabetes; if elimination by the kidneys occurs, it shocks that organ, a condition is called nephritis.
In short, "over four thousand names are given by 'medical science'" for one disease -- elimination problems -- and "names are made up according to the respective locality of elimination" (Barnes 1929: 434). It is known today that diabetes is caused by a malfunction of the beta cells on the pancreas, nephritis is kidney infection, and none of the "four-thousand" other diseases are caused by "elimination problems." Conversely many diseases can interfere with elimination by causing intestinal problems.
The mucousless diet also avoids dietary starch (the scientific recommendation is 55% of one's calories should come from starch) because starch
. . . will kill you before your time. Clean up by allowing your expanded stomach and colon to rest, thus allowing nature to throw off the waste. Get the relief that is sure to come by allowing the stomach and large intestine to contract and once again assume their normal size and shape (Barnes 1929: 434).
After "inner cleaning" with warm enemas, the Watchtower's prescription to health is complete. The Society cannot claim such irresponsible and dangerous advice they gave was because they were writing in a less enlightened time. Research had already confirmed the foolishness of these beliefs when they were published. Ehret was considered a quack in the 1920s, and one reason the Watchtower put their faith in him was because he condemned medical doctors. Anyone who condemned orthodox medicine had a sympathetic hearing from the Society, and often had their approval. The Golden Age supported him and even noted that his ideas were "old when he was born" (Shelton 1929: 564).
The Watchtower repeatedly lambasted all medications, once even quoting a prescription for hydrophobia recommended by the New York legislature in 1830 which included an ounce of a dog jawbone burned and pulverized to a fine dust and other unsavory ingredients. Whether the nostrum worked is not stated, but the Watchtower implies it did not. The advice was 120 years old when the Consolation article was printed, and publishing this article would not seem to have any other purpose than to poke fun at the pharmaceutical industry (Quackenbush 1939: 19).