Type 1 Diabetes

People with type 1 diabetes have increased blood glucose levels due to an absence of insulin. Formerly known as juvenile diabetes, type 1 diabetes is an autoimmune disease in which the immune system destroys the insulin-producing beta cells of the pancreas that regulate blood glucose. Type 1 diabetes can occur at any age, but it most often occurs in children and young adults.

 

What Is Type 1 Diabetes?

Diabetes is a chronic disease in which the body does not make or properly use insulin, a hormone that is needed to convert glucose (sugar) and other food into energy. There are two main types -- type 1 and type 2 diabetes. People with type 1 diabetes have a pancreas that doesn't produce enough insulin -- or stops producing it altogether. This means that without treatment sugar can build up in the blood. Therefore, people with type 1 diabetes need to have insulin shots on a regular basis to help keep their blood sugar as close to normal as possible.
 

Other Names for Type 1 Diabetes

To move away from basing the name of the type 1 diabetes on treatment (insulin-dependent diabetes) or age at onset (juvenile diabetes), in 1997, two organizations recommended a universal adoption of a more simplified terminology.
 

Cause of Type 1 Diabetes

Type 1 diabetes is an autoimmune disease in which the immune system destroys the insulin-producing beta cells of the pancreas that regulate blood glucose.
 A combination of genetic and environmental factors put people at increased risk for type 1 diabetes. Researchers are working to identify these factors and to stop the autoimmune process that destroys the pancreas.
 
Type 1 diabetes can occur at any age, but it most often occurs in children and young adults. Type 1 diabetes has an acute onset, with children and adolescents usually able to pinpoint when symptoms began.
 
Since the pancreas can no longer produce insulin, people with type 1 diabetes require daily injections of insulin for life. People with type 1 diabetes are at risk for long-term complications, such as damage to:
 
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Written by/reviewed by: Arthur Schoenstadt, MD
Last reviewed by: Arthur Schoenstadt, MD