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>Eating animal protein creates an acid load that increases urinary excretion of calcium and uric acid and reduced citrate. Urinary excretion of excess sulfurous amino acids (e.g., cysteine and methionine), uric acid, and other acidic metabolites from animal protein acidifies the urine, which promotes the formation of kidney stones.[33] Low urinary-citrate excretion is also commonly found in those with a high dietary intake of animal protein, whereas vegetarians tend to have higher levels of citrate excretion.[17] Low urinary citrate, too, promotes stone formation.[33] https://en.wikipedia.org/wiki/Kidney_stone_disease#Animal_protein

>>16784537
>Eating animal protein creates an acid load that increases urinary excretion of calcium and uric acid and reduced citrate. Urinary excretion of excess sulfurous amino acids (e.g., cysteine and methionine), uric acid, and other acidic metabolites from animal protein acidifies the urine, which promotes the formation of kidney stones.[33] Low urinary-citrate excretion is also commonly found in those with a high dietary intake of animal protein, whereas vegetarians tend to have higher levels of citrate excretion.[17] Low urinary citrate, too, promotes stone formation.[33]
https://en.wikipedia.org/wiki/Kidney_stone_disease#Animal_protein

In 1925, Kuczynski reported on the nomadics of the Kirghiz and Dzungarian Steppes in Central Asia and northern China of Mongolian descent. Similar to the observations of the diet of the nomadic Mongols of the 13th century, Kuczynski saw these nomadic pastoralists subsisted almost exclusively on enormous quantities of meat and milk. Other authors came to the same conclusions on the composition of the diet in the Central Asian Steppes. For example, Tayzhanov asserted:

>…the people [of the steppe] lived exclusively on meat, fat and sour milk. Bread was added only later and even then some households did not adopt or consume this food.30

This should make these populations also suitable to study the hypothesis that naturally raised animal foods protect against cardiovascular disease. However, not only did Kuczynski observe that these nomadic pastoralists suffered from high rates of obesity and gout similar to the Mongols of the 13th century, these further extended to the diagnosis of cardiovascular disease and other dietary related disorders:

>They get arteriosclerosis in an intense degree and often at an early age as shown by cardiac symptoms, nervous disordes, typical changes of the peripheral vessels, nephrosclerosis and, finally, apoplectic attacks. Even in men thirty-two years old I frequently observed arcus senilis.32