Deep sleep, memory formation go hand-in-hand. Scientists are also finding links to dementia
A growing body of research points to clear links between deep sleep and memory formation, and on the flip side, the possibility of dire consequences when someone’s sleep quality erodes over time. One new study found a decrease in deep sleep was associated with a higher risk of dementia.
![Deep sleep, memory formation go hand-in-hand. Scientists are also finding links to dementia](https://i.cbc.ca/1.7030211.1700151993!/fileImage/httpImage/image.jpg_gen/derivatives/16x9_620/brain-scans.jpg)
![A growing body of research points to clear links between the quality of your sleep and memory formation, including a new paper which found just a one per cent reduction in deep sleep each year in individuals aged 60 and up was associated with a significantly higher risk of developing dementia. Three brain scans.](https://i.cbc.ca/1.7030211.1700151993!/fileImage/httpImage/image.jpg_gen/derivatives/16x9_620/brain-scans.jpg)
A growing body of research points to clear links between deep sleep and memory formation, and on the flip side, the possibility of dire consequences when someone’s sleep quality erodes over time. One new study found a decrease in deep sleep was associated with a higher risk of dementia.