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Meanwhile, the surface of the small intestine absorbs anything that our enzymes have broken down into sufficiently small components—usually individual amino acids, simple sugars, and free fatty acids.Finally our ileocecal valve opens, and our small intestine releases what’s left into our large intestine— And the reason we have a bacterial colony in our colon is because our own enzymes can’t break down everything we eat.“Humans can’t actually digest meat: it rots in the colon.” And its variant: “Meat takes 4-7 days to digest, because it has to rot in your stomach first.” (Some variations on this myth claim it takes up to two months!) Like most vegetarian propaganda, it’s not just false, it’s an inversion of truth.So our gut bacteria go to work and digest some of the remainder, sometimes producing waste products that we can absorb.

And it sure seems like my gut bacteria have less to do now that my amylase and sucrase supplies aren’t being overwhelmed by an avalanche of starch and sugar.They chew and swallow grass and leaves into the rumen, ferment it some, barf it back up again, chew it some more (called “chewing the cud”), and swallow it again, where it is digested a second time.Hindgut fermenters, like horses, have an extra-long gut.That is why we can’t eat grass at all, why there is so little caloric value for us in vegetables, and why we call cellulose “insoluble fiber”: This fact alone proves that humans, while omnivores, are primarily carnivorous: we have a limited ability to digest some plant matter (starches and disaccharides) in order to get through bad times, but we cannot extract meaningful amounts of energy from the cellulose that forms the majority of edible plant matter, as true herbivores can. Leave a comment, and use the icons below to share it with your friends!We can only eat fruits, nuts, tubers, and seeds (which we call ‘grains’ and ‘beans’)—and seeds are only edible to us after laborious grinding, soaking, and cooking, because unlike the birds and rodents adapted to eat them, they’re Live in freedom, live in beauty. ) You might also enjoy “How ‘Heart-Healthy Whole Grains’ Make Us Fat”, “Why Humans Crave Fat”, the classic “Eat Like A Predator, Not Like Prey: Paleo In Six Easy Steps”…and for yet more diet myths busted and truths discovered, try the index.

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