Do you need to be worried about your brain health if you sleep too little?

There is a worry in society that too little sleep has strong negative effects on physical, mental and cognitive health. Some have even suggested that we are suffering an ‘epidemic of sleeplessness” in modern societies. Lack of sleep is also a concern for brain health, and we know that old people with sleep problems have a higher risk of developing Alzheimer’s Disease and other dementias.

So how much sleep is enough to take care of your brain? We did not find convincing evidence that how much people report to sleep is related to how their brain ages. However, results also show that we cannot exclude the possibility that sleeping very little (fewer than 5 hours) or a lot (mor e than 10 hours) is related to poorer brain health.

Read more about the findings in the Lifebrain E-newsletter January 2021.

Published Feb. 1, 2021 9:15 AM - Last modified Mar. 26, 2021 10:45 AM