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Type 1 Diabetes - What Increases Your Risk

Risk factors for type 1 diabetes include:

  • Family history of type 1 diabetes. Having a family history of the disease increases the chance that a person will have islet cell antibodies, but it does not predict that a person will have the disease. Only about 10% to 15% of people with type 1 diabetes have a family history of the disease. 1
    • If the father has the disease, a child has a 6% risk of developing it.
    • If a sibling has the disease, a child has a 5% risk of developing it.
    • If the mother has the disease, a child has a 2% risk of developing it.
    • If an identical twin has the disease, the other twin has a 30% to 50% risk of developing it.
    • If a parent and one sibling have the disease, a child has a 30% risk of developing it.
  • Race. White people have a greater risk for developing type 1 diabetes than black, Asian, or Hispanic people.
  • Presence of islet cell antibodies in the blood. People who have both a family history of type 1 diabetes and islet cell antibodies in their blood are likely to develop the disease at some time.

More Information:

WebMD Medical Reference from Healthwise

Last Updated: September 17, 2008
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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