. Insulin injection. Overweight diabetic man injecting himself in the abdomen with insulin. He has diabetes mellitus. This is a disorder affecting glucose sugar metabolism. Sugar is not oxidised due to a lack of the pancreatic hormone insulin. Unused sugar accumulates in the blood and the urine. Fats are used as an alternative energy source, which leads to a build-up of ketones in the blood. This build-up may eventually cause convulsions and diabetic coma. Treatment is based on a strict diet and the use of daily insulin injections to maintain the blood-sugar balance. MODEL RELEASED

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