Hyperphagia in rats with experimental diabetes mellitus: A response to a decreased supply of utilizable fuels.

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Abstract
Alloxan-diabetic rats were hyperphagic when fed diets containing little fat, but they ate normal amounts of food when given diets rich in fat. Normal rats increased food intake to the same degree when the caloric density of their diet was decreased by reducing the content of fats or carbohydrates in isocaloric amounts. Diabetic rats did not respond substantially to changes in caloric density of their diet which were produced by altering the content of dietary carbohydrates, but they systematically increased food intake as the amount of fat in their diet was reduced. Diabetic rats ate normal amounts of a high-fat diet despite continued loss of nutrients in urine and persisting impairments in glucose utilization, fat storage and liver glycogen deposition. Hyperphagia in experimental diabetes mellitus may be a compensatory response to a lack of utilizable fat fuels rather than the result of a metabolic disturbance per se.

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