Type 2 diabetes diagnoses among Black and Asian men delayed due to hidden genetic risk

Type 2 Diabetes Diagnoses Delayed in Black and Asian Men Due to Hidden Genetic Risk

A hidden genetic variant found in Black and Asian men can cause delays in type 2 diabetes diagnoses, according to new evidence.

A recent study detected a genetic variant known as G6PD deficiency in approximately one in seven Black men and one in 63 South Asian men in the UK.

Type 2 diabetes is not triggered by G6PD deficiency, but it can make an HbA1c blood test appear artificially low, misleading healthcare professionals and delaying diagnosis.

“Our findings highlight the urgent need for changes to testing practices to tackle health inequalities,” said Lead author Professor Inês Barroso.

Author's summary: Genetic variant delays type 2 diabetes diagnosis.

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Diabetes.co.uk Diabetes.co.uk — 2025-10-13