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Blood Test May Predict Alzheimer's Years Ahead | US News
Description
Scientists just dropped a game-changing blood test that spots a key Alzheimer’s marker, p-tau217, which can predict cognitive decline up to ten years before symptoms hit—giving doctors a powerful tool to catch patients early and get them into trials faster. High levels mean a 38% chance of issues in five years, soaring to 78% over ten. But experts caution: it’s not ready for routine use yet. Too few long-term data points, potential confounding factors like heart disease, and the fact that some people with brain plaques never develop dementia mean this is a promising piece of the puzzle—not the whole picture. Still, if validated, this could revolutionize prevention and treatment.
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