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

The study analyzed health records from more than 26,000 adults with obesity and at least one autoimmune disease, such as rheumatoid arthritis, psoriatic arthritis, type 1 diabetes, vitiligo, and celiac disease. —Tom Gavin, EverydayHealth.com, 9 June 2026

Maygen says Paisley has struggled with anxiety ever since being diagnosed with type 1 diabetes at 2 years old. —Nicki Cox, PEOPLE, 26 Apr. 2026

Autoimmune diseases—a broad and complex category of ailments including rheumatoid arthritis and type 1 diabetes—have long puzzled researchers. —Katherine J. Wu, The Atlantic, 9 Apr. 2026

Kirby was diagnosed with type 1 diabetes at the age of ten and openly discusses her health journey online. —Madison Dapcevich, Outside, 28 Mar. 2026

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