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Why Type 1 diabetes is called an autoimmune disease?

  Type 1 diabetes is called an autoimmune disease because the body's immune system mistakenly attacks the cells in the pancreas that produce insulin. Insulin is a hormone that helps the body use glucose for energy. When the body doesn't produce enough insulin, glucose builds up in the blood, which can lead to serious health problems. The exact cause of type 1 diabetes is unknown, but it is thought to be a combination of genetic and environmental factors. People with certain genetic markers are more likely to develop type 1 diabetes, but not everyone with these markers will develop the disease. There is also some evidence that certain environmental factors, such as viruses, may trigger the onset of type 1 diabetes in people who are genetically predisposed to the disease. The symptoms of type 1 diabetes can develop suddenly or gradually. Some of the most common symptoms include: Increased thirst Frequent urination Extreme hunger Weight loss Fatigue Blurred vision Slow-healing sor...