OMXUS Press
Wai Diet Claims: What's Real, What's Not, What's Useful
2026
1,424 words
~5 min read
5 chapters
OMXUS Press
2026
The article mixes legitimate science with false claims and dangerous advice. Three findings are genuinely useful for the book. The rest ranges from overstated to irresponsible.
Status: Legit science, active research, Mendelian randomization evidence.
The koala connection Applebee intuited is real. Koala gut dysbiosis manifests as "dirty tail" — disrupted hindgut fermentation visible in the animal's waste and condition. In humans, gut dysbiosis manifests through the gut-skin axis:
Book use: The koala's dirty tail and the teenager's acne are the same signal — gut dysbiosis expressing through the organism's external condition. Nobody tells a teenager with acne to fix their gut. They give them benzoyl peroxide. A zookeeper who saw dirty tail would immediately review the browse.
Key sources:
Status: Real paper (Milton 1987), real finding, cherry-picked by Wai Diet but still useful.
Katherine Milton (UC Berkeley) compared gut proportions across primates. Human gut proportions (small intestine = 56-67% of total gut volume, colon = 17-23%) are statistically grouped with capuchin monkeys and savanna baboons — NOT with great apes (orangutans/chimps have colon = 52-54%).
The capuchin diet: sweet fruits, nuts, oily seeds, insects, eggs, small vertebrates.
What Milton actually argued: The gut proportion similarity reflects convergent adaptation to high-quality diets (humans via cooking + meat). She did NOT argue humans should eat like capuchins. The Wai Diet misrepresents her conclusion.
Book use: "If a zoo nutritionist were asked to design a diet for a captive primate with human gut proportions, and consulted the comparative morphology literature, the closest dietary analogue would be the capuchin monkey: sweet fruits, nuts, oily seeds, and small amounts of animal protein. Not bread. Not pasta. Not a cheese and salad sandwich on wheat."
Key source: Milton K (1987) "Primate diets and gut morphology" in Food and Evolution, Temple University Press, pp. 93-115.
Status: Real, well-established food chemistry. Classified as probable/possible carcinogens by IARC.
HCAs form when amino acids, sugars, and creatine react at high temperatures (pan-frying, grilling, barbecuing). The Matsumoto 1981 study is real — 1g grilled beef contains as much of 2 specific mutagens (amino-alpha-carbolines) as 8 cigarettes. BUT: this compares only 2 of 70+ cigarette carcinogens. The overall cancer risk comparison is misleading.
Overstated by Wai Diet: Human epidemiological evidence for HCAs causing cancer at normal dietary levels is inconclusive. NCI: "Population studies have not established a definitive link between HCA and PAH exposure from cooked meats and cancer in humans." The doses in animal carcinogenicity studies were "equivalent to thousands of times the doses that a person would consume in a normal diet."
Book use: Already in Chapter 2 — acrylamide and hydroxymethylfurfural in the bread crust. HCAs strengthen the general point: cooking creates novel compounds. Whether these cause cancer at dietary doses is debated, but the koala-test point stands: a zoo nutritionist would flag them. Nobody flags them for humans.
Key sources:
The gut-skin axis is the strongest new material. It connects the koala section to a reader's lived experience:
Koala: Bad browse → gut dysbiosis → dirty tail → chronic subclinical decline
Human: Bad food → gut dysbiosis → acne, eczema, inflammation → chronic subclinical decline
The parallel is exact. And the response is identical in its failure: the koala keeper sees dirty tail and reviews the browse. The human dermatologist sees acne and prescribes topical medication — treating the surface symptom without assessing the nutritional input.
The capuchin comparison could work in "The Omnivore's Machinery" or "What the Animal Ate" — it gives a zoological answer to "what should this animal eat?" based on gut morphology, which is exactly how a zoo nutritionist would approach the question.
Raw fruits, olive oil, raw fish, raw egg yolks, some nuts. No cooking, no dairy, no vegetables, no grains, no beans.
Assessment: Contains some reasonable elements (fruit, nuts, fish, olive oil) wrapped in ideology that cherry-picks science and makes dangerous claims about raw meat/egg safety. The fiber elimination directly contradicts the strongest evidence in nutritional science. The anti-vegetable stance has no basis. The raw meat advice is genuinely dangerous.
For the book: The Wai Diet is an example of what happens when someone correctly identifies a problem (modern food is bad for us) but proposes a solution based on selective science rather than the complete evidence. This is actually the pattern the book describes: a misguided attempt at something good. The impulse — to return to species-appropriate nutrition — is correct. The execution is ideological rather than scientific.
We don't need to cite the Wai Diet. We need to cite the real science it points at (gut-skin axis, HCAs, capuchin morphology) and let the zoological framework do the work.