Specific levels of sleep are important for maintaining cognitive function in preclinical and early Alzheimer’s disease

Takeaway

  • Sleep measures have an optimal middle range where preclinical Alzheimer’s cognitive composite scores are stable.

Why this matters

  • Although sleep monitoring has been proposed as a potential marker for development of Alzheimer's disease, little is known about the relationship between sleep and cognitive function in preclinical and early symptomatic Alzheimer's disease.

  • This novel study sought to investigate the relationship between sleep and cognition changes over time in community-living participants, the majority of whom were cognitively normal.

  • The findings suggest that sleep parameters could help to track the risk of developing cognitive impairment and that sleep interventions could help maintain cognitive function in individuals at risk of developing Alzheimer’s disease.