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A variable disorder of carbohydrate metabolism caused by a combination of hereditary and environmental factors, and characterized by inadequate secretion or utilization of insulin; excessive urine production; too much sugar in the blood and urine; and thirst, hunger and weight loss.

Type 1: Results from the body's failure to produce insulin. Usually diagnosed during childhood or adolescence.

Type 2: Results from the body’s failure to produce enough insulin, or the cells ignore the insulin. Usually diagnosed in adults and most often in obese individuals.

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