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Blood test may predict dementia up to 25 years before symptom onset in women

March 12, 2026

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Could a blood test for an Alzheimer’s-related protein help predict disease risk years before symptoms begin? Jovana Milanko/Stocksy

Blood-based biomarkers of Alzheimer’s disease can be a more accessible and scalable alternative to other diagnostic methods involving expensive imaging scans or invasive cerebrospinal fluid…

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