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Alzheimer's Blood Test Detects Disease Decades Early
29 May
Summary
- Blood test identifies Alzheimer's proteins years before symptoms.
- Early detection linked to cognitive differences in midlife.
- New scan technique better detects tau tangles than older methods.
Groundbreaking research suggests a simple blood test could identify Alzheimer's disease decades before symptoms manifest. The findings indicate that the neurological disorder may already be present in midlife, associated with subtle cognitive differences.
This advancement builds on previous studies, showing evidence of Alzheimer's neuropathology in midlife. Identifying individuals with early Alzheimer's through accessible blood tests could target preventive strategies and clinical trials, potentially delaying dementia onset.
A separate study also proposed a novel brain scanning technique using MK6240, which identified more than twice as many tau-positive cases than older agents. Dementia affects an estimated one million people in the UK, with Alzheimer's accounting for a majority of cases.
Experts emphasize that earlier detection is crucial for enrolling patients in treatment studies and potentially offering disease-modifying therapies. However, further research in diverse groups is needed before routine implementation. Initiatives aim to make blood tests for dementia diagnosis available on the NHS by 2029.
