About T1D

About T1D

Type 1 Diabetes Facts

Type 1 diabetes is an autoimmune disease that strikes both children and adults suddenly—there is nothing you can do to prevent it, and right now, there is no cure. In T1D, your pancreas stops producing insulin—a hormone the body needs to get energy from food. This means a process your body does naturally and automatically becomes something that requires your daily attention and manual intervention. If you have T1D, you must constantly monitor your blood sugar level, inject or infuse insulin through a pump, and carefully balance these insulin doses with your eating and activity throughout the day and night.


  • Some 1.45 million Americans are living with T1D.
  • 64,000 people are diagnosed each year in the U.S.
  • 2.1 million people in the U.S. are expected to have T1D by 2040.
  • Between 2001 and 2009, there was a 21 percent increase in the prevalence of T1D in people under age 20.
  • In the U.S., there are $16 billion in T1D-associated healthcare expenditures and lost income annually.
  • Less than one-third of people with T1D in the U.S. are consistently achieving target blood-glucose control levels.

Learn more at BreakthroughT1D.org/t1d-basics/faq/.

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