Older women who frequently awaken at night may be at higher risk of dementia and stroke

Takeaway

  • In middle-aged and older women, more frequent awakening during the night is linked to greater brain white matter hyperintensities.

Why this matters

    Disrupted sleep is a common problem for older women and has been linked to increased dementia and stroke risk. These actigraphy-based observations suggest that sleep could be a significant modifiable risk factor that can be targeted to improve women’s brain health as they age.