New Blood Test Shows Promise for Early Alzheimer’s Detection
A blood test could flag Alzheimer’s risk early. But how reliable is it?
Euronews
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A study from the University of California, San Francisco suggests a blood test could identify individuals at higher risk for Alzheimer’s disease before symptoms arise. The test measures proteins linked to cognitive decline in middle-aged adults, potentially allowing for earlier interventions.
- 01The study involved blood samples from 1,350 adults aged 53 to 69, revealing that 6% had high levels of amyloid and tau proteins.
- 02Participants with high protein levels exhibited slower responses to changing information and difficulties with planning and organization tasks.
- 03Five years later, those with elevated protein levels showed a faster decline in verbal memory and processing speed.
- 04Current diagnostic methods like MRI scans are expensive and not always accessible, making blood tests a potentially cheaper alternative.
- 05Experts caution that the test is not a definitive diagnosis for Alzheimer’s and should not be misconstrued as such.
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Researchers at the University of California, San Francisco (UCSF) have identified a blood test that may help detect Alzheimer’s disease risk years before symptoms appear. The study found that certain Alzheimer-related proteins, specifically amyloid and tau, correlate with subtle cognitive differences in middle-aged adults without dementia. In their analysis of 1,350 adults aged 53 to 69, 6% exhibited high levels of these proteins, which were associated with slower responses to information and difficulties in planning and organizing tasks. Follow-up assessments indicated that these individuals experienced a more rapid decline in memory and processing speed over five years. While this blood test could provide a quicker and more affordable diagnostic method compared to MRI scans, experts emphasize that it is not yet suitable for widespread screening. They warn against misinterpretation of the results, as the presence of these proteins does not equate to a diagnosis of Alzheimer’s. Early detection remains crucial, as addressing risk factors such as physical inactivity and poor heart health could potentially delay or prevent up to 40% of dementia cases.
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The potential for earlier Alzheimer’s detection could lead to timely interventions, improving patient outcomes and reducing healthcare costs.
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