Blood Test May Identify Alzheimer’s Risk Years Before Symptoms
A major international study has found that a simple blood test may help predict Alzheimer’s-related cognitive decline years before symptoms begin.
Among people identified as being at the highest risk, researchers estimated a 38% chance of cognitive impairment within five years and a 78% chance within 10 years. The test could allow clinicians to identify people who may benefit from earlier intervention, while also supporting the development of treatments designed to prevent Alzheimer’s before memory problems start.
The results point toward blood-based risk screening as a possible complement to existing diagnostic approaches, although further validation would be needed before it could be widely used in clinical practice.