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 could cause delays in them being diagnosed with type 2 diabetes, new evidence has indicated.

A genetic variant known as G6PD deficiency was detected in around one in seven Black and one in 63 South Asian men in the UK, according to a recent study.

Type 2 diabetes is not triggered by G6PD deficiency, but it makes an HbA1c blood test appear artificially low, which can mislead healthcare professionals and delay a diagnosis of type 2 diabetes.

“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 in Black and Asian men.

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