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

Mattel took another step toward inclusive play on Monday with the launch of its first autistic Barbie, expanding its Fashionistas range just months after introducing a Barbie with type 1 diabetes. —Sujita Sinha, Interesting Engineering, 12 Jan. 2026

Tzield would be the first disease-modifying therapy that works to delay stage three type 1 diabetes for children aged 1 and older who currently have stage two of the disease, according to Sanofi. —Ed Silverman, STAT, 5 Jan. 2026

Scientists are now trying to tap these cells for new ways to treat cancer, type 1 diabetes, rheumatoid arthritis and organ or tissue transplant complications. —Lauren J. Young, Scientific American, 23 Dec. 2025

Two of the couple's children — son Noble, 15 months, and daughter Goldie, 6 — were diagnosed with type 1 diabetes within months of each other, even though there's no history of the condition in their family, the couple tells PEOPLE. —David Chiu, PEOPLE, 21 Dec. 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