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The dementia risk from short sleep starts below six hours a night, not below eight.

Drawn from what Tommy Wood said

dementia
What this subject means

dementia Alzheimer's, Parkinson's and cognitive decline: what raises the risk, what is preventable, and what ageing well protects.

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What Tommy Wood actually said

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  1. Tommy Wood

    Associate professor at the University of Washington

    but I mean in reality when you look at the data on sleep loss and dementia risk The cut off is really around 6 hours. So if you're consistently sleeping fewer than 6 hours, that's where risk starts to increase.

Added to korrents 20 Jul 2026 · How quotes work · Something wrong? Tell us

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