Human populations show specific diet-related biological adaptations, including differences in the ability to digest or tolerate some foods.

This page isolates one claim from the wider argument of The Human OS Manual.

The classification describes the evidence supporting this claim, not the Human OS framework as a whole.

Jelenkovic, Ibáñez-Zamacona, and Rebato review genetic and cultural coevolution around diet, including population differences in digestion and tolerance shaped by historical selection pressures.

This does not establish that ancestry determines an ideal modern diet, that population averages prescribe individual eating, or that every dietary preference is genetically adaptive.

The book uses this evidence to reject a generic-body assumption without turning ancestry into dietary determinism.

Broad, mature principles of human biology, behavior, or regulation supported across a substantial body of research.

Sources are listed according to the role they play in this claim. One source may provide direct support, another may explain a mechanism, establish a limitation, or prevent an interpretation from becoming broader than the evidence allows.

The printed book preserves the claim inside the argument that gives it meaning. These references connect the current digital record to the first-edition evidence trail.

This claim connects to the following parts of the Human OS architecture. The module labels locate the claim inside the framework; they do not imply that the research source validates the architecture itself.