CRISTINA PEDRAZZINI / SCIENCE PHOTO LIBRARY CRISTINA PEDRAZZINI / SCIENCE PHOTO LIBRARY
Diabetes blood testing. Test strip with a drop of blood (red). The test strip is designed to be put in a glucometer to measure blood glucose level. Glucose, the simplest blood sugar, is one of the body's main sources of energy. Diabetics have to monitor their blood glucose level and maintain it at the correct level. Diabetes is caused by low levels of the hormone insulin. Without insulin, the body cannot metabolise glucose as an energy source. Instead, fats are used, causing the build up of ketones in the blood. This can ultimately lead to convulsions and diabetic coma. Excessive amounts of glucose can also be damaging.
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