Scientists May Have Found a Way to Spot Alzheimer’s Risk Early
Summary
Scientists have found that a blood test measuring a protein called p-tau217 can predict the risk of developing Alzheimer’s-related memory and thinking problems up to 10 years before symptoms appear. This test could help doctors identify at-risk people earlier and improve chances for prevention and treatment.Key Facts
- The blood test measures p-tau217, a protein linked to Alzheimer’s disease.
- Older adults with very high p-tau217 levels had about a 78% chance of cognitive decline within 10 years.
- The study tracked nearly 2,700 healthy adults, average age 70, for about five years.
- Elevated p-tau217 levels better predicted Alzheimer’s risk than brain scans or genetic tests alone.
- P-tau217 relates to brain changes seen in Alzheimer’s, including tau tangles and amyloid beta buildup.
- Early detection via this test could allow doctors to offer personalized prevention like managing blood pressure and sleep.
- Experts warn the test must be paired with counseling and fair access to avoid anxiety and discrimination.
- The test may help speed up clinical trials to find treatments that delay or prevent Alzheimer’s.
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