Broken Sleep, Broken Memory? Neurocognitive Consequences of Sleep fragmentation in Older Black Americans

Sleep continuity, as indicated by lower WASO, appears to be an important factor in preserving cognitive function and reducing the risk for Alzheimer's disease and related dementias (ADRD). These findings underscore the need for targeted interventions addressing sleep fragmentation to support healthy cognitive aging in this population. Addressing sleep continuity may serve as a modifiable pathway to promote cognitive resilience and mitigate ADRD disparities among Black Americans. Further research is warranted to explore causal mechanisms and potential moderating factors.