Sleep's role in MCI reversion: A One‐Night Impact

In this preliminary study, participants who slept shorter than the group average on the night before cognitive examination were more likely to revert from MCI to normal cognitive classification one year later. These findings underscore the need to consider acute sleep variation in MCI diagnoses. Incorporating short-term sleep measures into clinical care and trials⁷ along with biological biomarkers may help refine diagnostic accuracy as prodromal Alzheimer's vs. potentially "reversible" causes, and guide targeted interventions for cognitive health.