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flag A nasal swab detects Alzheimer’s years before symptoms by spotting gene changes in nose cells, with 81% accuracy in early trials.

flag A Duke University study finds a nasal swab may detect Alzheimer’s disease years before symptoms appear by analyzing gene activity in cells from the nose’s olfactory lining. flag In a small trial of 22 participants, the test identified Alzheimer’s-related patterns with 81% accuracy, including in asymptomatic individuals with biological markers. flag The non-invasive method, which uses a brush to collect cells after numbing the nose, could enable earlier diagnosis and treatment, potentially improving outcomes. flag Researchers believe the nasal cells reflect early brain changes, offering a promising window into the disease’s onset. flag While not yet a diagnostic tool, the approach holds potential for widespread use if larger trials confirm its reliability.

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