Type 1 Diabetes
(Insulin Dependent Diabetes Mellitus; Juvenile-Onset Diabetes; Ketosis-Prone Diabetes; "Brittle" Diabetes; Diabetes Mellitus Type 1; Diabetes, Type 1)
DefinitionDiabetes is a higher level of glucose in the blood than is normal. Glucose travels through your body in the blood. A hormone called insulin then helps glucose move from your blood to your cells. Once glucose is in your cells it can be used for energy. A problem making or using insulin means glucose can not move into your cells. Instead the glucose will build up in your blood.In type 1 diabetes, the body does not make insulin. This will lead to the build up of glucose in the blood, also called hyperglycemia. At the same time, your cells are not getting glucose they need to function well. Over a long period of time high blood glucose levels can also damage vital organs. The blood vessels, heart, kidneys, eyes, and nerves are most commonly affected organs.Type 1 diabetes is often found during childhood and young adulthood.
CausesOur immune system keeps us well by fighting off and destroying viruses and bacteria. Unfortunately, sometimes the immune system attacks healthy tissue. Most type 1 diabetes develop because the immune system attacks and destroys the cells that make insulin. These cells are in the pancreas.It is not yet clear why the immune system attacks these cells. It is believed that some people have genes that make them prone to getting diabetes. For these people, certain triggers in the environment may make the immune system attack the pancreas. The triggers are not known but may be certain viruses, foods, or chemicals.Type 1 diabetes may also develop as a complication of other medical conditions. It may develop in:
- People with chronic type 2 diabetes who lose the ability to make insulin.
- Some with chronic pancreatitis or pancreatic surgery. They may lose the cells that make insulin.
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