With a lineage rooted in Eastern Europe, Ashkenazi Jews were genetically isolated from their non-Jewish counterparts for centuries.
"We found that people with amyloid plaques who had more severe sleep apneas also were more likely to have lower volumes in the medial temporal lobe area," researchers report.
This protein, associated with learning and memory, could be an early indicator of mild cognitive impairment up to 7 years before symptoms appear.
What if the microbes in your gut could act as an early warning system, alerting you that you could be developing Alzheimer’s disease?
Those who carried this gene, known to increase the risk of Alzheimer's, experienced a decline in their ability to detect scents between the ages of 65 and 69.
The study revealed that these individuals typically defy the standard trajectory of memory decline associated with aging.