From Rational Fasting by Arnold Ehret – PDF
To those who think it impossible to give up the usual mucus food (meat, etc.). To those “unfortunate ones” I give this advice: Chew your food, that is every bite, thoroughly as recommended by the American, Horace Fletcher, in one word “fletcherize.” Not that the fruit-eaters should not do this, certainly, but the poison-laden mucus eaters must do so especially, if they do not wish to sink into their graves all too soon.
Chewing slowly furthers the secretion of saliva which decreases the formation of mucus and prevents overeating. Of course, this class of people cannot quite achieve the standard of health and strength, preservation of youth and perseverance, physical and mental capacity of the faster and fruit-eater.