Back to today’s briefing

Story perspectives

Declining Deep Sleep Boosts Dementia Risk by 27%

6/17/2025

45 8

Summary

Story summary

A recent study reveals a troubling link between declining slow-wave sleep and heightened dementia risk. For every 1% decrease in deep sleep, the likelihood of developing dementia surges by 27%. However, by improving sleep habits, older adults can bolster their cognitive resilience, presenting a hopeful avenue in the fight against Alzheimer’s disease.

1 of 1

Story summary

A recent study reveals a troubling link between declining slow-wave sleep and heightened dementia risk. For every 1% decrease in deep sleep, the likelihood of developing dementia surges by 27%. However, by improving sleep habits, older adults can bolster their cognitive resilience, presenting a hopeful avenue in the fight against Alzheimer’s disease.