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

It was caused as a complication of his type 1 diabetes. —Vanessa Etienne, PEOPLE, 1 Dec. 2025

The researchers also studied nine mice that had long-standing type 1 diabetes. —Angelica Stabile, FOXNews.com, 28 Nov. 2025

Nick Jonas, a singer, actor, and member of the Jonas Brothers, also has type 1 diabetes. —Jenna Anderson, Health, 24 Nov. 2025

While type 1 diabetes cannot yet be fully prevented, newer medications can help delay its onset in certain high-risk individuals. —Dr. Brittany Bruggeman, Boston Herald, 16 Nov. 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