Hidden 'type 1.5' diabetes affects millions of adults. Here's how to spot it | BBC Science Focus Magazine

Understanding Type 1.5 Diabetes

Millions of adults are affected by a lesser-known form of diabetes, often referred to as "type 1.5" diabetes or Latent Auto-immune Diabetes (LADA).

LADA shares similarities with type 1 and type 2 diabetes, making it challenging to diagnose. Despite being recognized as a distinct form of diabetes since 1993, it is often misdiagnosed, with

as many as 14 per cent of people diagnosed with type 2 diabetes
potentially having LADA instead.

Type 1.5 diabetes, or LADA, accounts for 3-12 per cent of all cases of diabetes in adults and is characterized by an excess of sugar, or glucose, in the blood.

A recent study highlights the need for accurate diagnosis to ensure proper treatment and care for those affected by this condition.

Author's summary: Type 1.5 diabetes affects millions, often misdiagnosed as type 2.

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Science Focus Science Focus — 2025-10-20

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