An examination of the fecal matter reveals both undigested starch granules and protein shreds and fibers, whereas, when ingested separately, each goes to a conclusion. We don't want food to sit around rotting in the stomach for eight hours and fouling up the intestines for twenty hours more. What we really want is food going into the stomach and being there approximately three hours with no putrefaction, no fermentation, no gas, no flatulence, no heartburn, and no indigestion requiring medication. We want food to pass quickly and efficiently through the intestines. The way to insure that is to have one concentrated food at a time, not two.
Improper food combining drastically thwarts the assimilation and the elimination cycles.
Each enzyme is specific in its action. This is to say, it acts only upon one class of food substance. The enzymes that act upon carbohydrates do not and cannot act upon proteins nor upon salts nor fats. They are even more specific than this would indicate. Each sugar seems to require its own specific enzyme.