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New blood test ‘clocks’ could predict Alzheimer’s symptom onset years in advance

February 24, 2026

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A simple blood test may be able to predict Alzheimer’s disease years before symptoms start. Image credit: Artur Debat/Getty Images

Researchers have developed a blood-based model that estimates when Alzheimer’s symptoms are likely to begin within a margin of about 3 to 4 years.
The findings suggest a single blood test could act as a…

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