Enter your Everyday Health log-in here:

E-Mail Address:
Forgot Your Password?

Differences Between Type 1 and Type 2 Diabetes


  • Type 1 diabetes (formerly called juvenile-onset or insulin-dependent diabetes), accounts for 5% to 10% of all people with diabetes.1 In type 1 diabetes, the body's immune system destroys the cells that release insulin, eventually eliminating insulin production from the body. Without insulin, cells cannot absorb sugar (glucose), which they need to produce energy.
  • Type 2 diabetes (formerly called adult-onset or non–insulin-dependent diabetes) can develop at any age, but most commonly becomes apparent during adulthood. But the incidence of type 2 diabetes in children is rising. Type 2 diabetes accounts for the vast majority of people with diabetes—90% to 95%. In contrast to type 1 diabetes, insulin resistance is the main characteristic of type 2 diabetes. Insulin resistance refers to the body's inability to respond properly to insulin. Resistance develops because of many factors, including genetics, obesity, increasing age, and having high blood sugar for a long time.

How are these diseases different?

Differences between type 1 and type 2 diabetes
Type 1 diabetes Type 2 diabetes

How are they alike?

Both types of diabetes greatly increase a person's risk for a range of serious complications. Although monitoring and management of the disease can prevent complications, diabetes remains the leading cause of blindness and kidney failure. It also continues to be a critical risk factor for heart disease, stroke, and foot or leg amputations.


  1. U.S. Centers for Disease Control and Prevention (2008). National Diabetes Fact Sheet 2007. Atlanta: U.S. Department of Health and Human Services. Available online: http://www.cdc.gov/diabetes/pubs/pdf/ndfs_2007.pdf.
ByHealthwise Staff
Primary Medical ReviewerJohn Pope, MD - Pediatrics
Last RevisedSeptember 14, 2010