The study claims that poor sleep and Alzheimer’s disease are both associated with thinking (“cognitive”) declines but separating out the effects of each has been a challenge in the past.
This new study included 100 older adults whose cognitive function had been monitored for an average of over four years. The participants underwent a sleep study and were tested for a high-risk Alzheimer’s genetic variant.
Overall, cognitive scores declined for those with less than 5.5 or more than 7.5 hours of self-reported sleep per night, while scores remained stable for those in the middle of the range.
The findings were published in the journal Brain.
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