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Historical Event

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July 9, 1928

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Peter Heinbecker reports on ketosis in Eskimos eating only meat.

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STUDIES ON THE METABOLISM OF ESKIMOS.

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It is well known that in most human subjects ketosis appears -when the material metabolized becomes restricted to protein and fat. This condition is observed after several days of fasting, on diets deficient in carbohydrate, and in diabetes in consequence of the loss of ability to metabolize carbohydrate. These facts have led to the view that a certain minimum combustion of carbohydrate is necessary to avoid ketosis. The diet of the Eskimo has long been recognized as an apparent exception to this view. Being restricted almost wholly to animal tissues and containing therefore ,only a very small proportion of carbohydrate, such a diet might be expected to produce a ketosis. Similar diets fed to human subjects of temperate zones do so. Although the fact appears not to have been investigated, it has been assumed that Eskimos do not exhibit ketosis on their customary diets. To account for this assumed fact it has been suggested that the Eskimos must possess an adaptation to non-carbohydrate diet. In his analysis of the ketogenic and antiketogenic factors, the balance between which seems to determine the appearance or non-appearance of ketosis, Shaffer (1) has considered the Eskimo ,dietary, using the data reported by Krogh (2). According to his analysis the metabolism of the foodstuffs contained in the Eskimo dietary would not be expected to cause ketosis, because the calculated antiketogenic effect of the large protein ingestion was somewhat more than enough to offset the ketogenic effect of fat plus protein. In an effort to obtain more definite information as to the carbohydrate metabolism of the Eskimos and their liability to ketosis, the writer undertook, at Dr. Shaffer’s suggestion, the experiments here reported. The observations were made in July and August, 1927, upon Bapin Island Eskimos, the writer being a member of the Putnam Baffin Island Expedition.


The Eskimo in his natural state eats practically only flesh.

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Eskimo
The Inuit lived for as long as 10,000 years in the far north of Canada, Alaska, and Greenland and likely come from Mongolian Bering-Strait travelers. They ate an all-meat diet of seal, whale, caribou, musk ox, fish, birds, and eggs. Their nutritional transition to civilized plant foods spelled their health demise.
Carnivore Diet
The carnivore diet involves eating only animal products such as meat, fish, dairy, eggs, marrow, meat broths, organs. There are little to no plants in the diet.
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