type 1 diabetes

noun

ˈtīp-ˈwən- 

: a form of diabetes mellitus that usually develops during childhood or adolescence and is characterized by a severe deficiency in insulin secretion resulting from atrophy of the islets of Langerhans and causing hyperglycemia and a marked tendency toward ketoacidosis

called also insulin-dependent diabetes, insulin-dependent diabetes mellitus, type 1 diabetes mellitus

Examples of type 1 diabetes in a Sentence

Recent Examples on the Web

Arnold, diagnosed with type 1 diabetes at age 15, has been open about her journey on social media. —Amanda Castro, MSNBC Newsweek, 15 Oct. 2025

Babies will also be screened for type 1 diabetes for up to five or six years. —Lauren J. Young, Scientific American, 14 Oct. 2025

In the last decade, Barbie has been rolling out more inclusive and diverse dolls, such as the first-ever one with type 1 diabetes and one with Down syndrome. —Anna Halkidis, Parents, 18 Sep. 2025

To survive, people with type 1 diabetes must monitor their blood sugar levels constantly. —William A. Haseltine, Forbes.com, 12 Aug. 2025

Word History

First Known Use

1982, in the meaning defined above

Medical Definition

type 1 diabetes

noun

ˌtīp-ˈwən- 

: diabetes of a form that usually develops during childhood or adolescence and is characterized by a severe deficiency of insulin secretion resulting from atrophy of the islets of Langerhans and causing hyperglycemia and a marked tendency toward ketoacidosis

called also insulin-dependent diabetes, insulin-dependent diabetes mellitus, juvenile diabetes, juvenile-onset diabetes, type 1 diabetes mellitus