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

When Ella was diagnosed with type 1 diabetes at age five, the endocrinologist taught Grace and Graziella to recognize the clinical signs of dangerously high and low blood sugar. — Danielle Parker, CBS News, 29 Sep. 2026

Certain groups should not fast at all, including pregnant or breastfeeding women, children and teenagers, people with type 1 diabetes and anyone with a history of eating disorders. — Hanna Wickes, Sacbee.com, 25 Sep. 2026

The medication is not recommended for patients with type 1 diabetes due to a higher risk of severe hypoglycemia, or low blood sugar. — Emily Kay Votruba, EverydayHealth.com, 25 Sep. 2026

Historically, these devices were prescribed for people with type 1 diabetes and, more recently, for those with type 2 diabetes to monitor their glucose levels and adjust insulin dosage. — Crystal Gwizdala, Hartford Courant, 24 Sep. 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