Alzheimer’s risk rises when the amount of deep sleep falls, study suggests

We often hear that sleep is important, but recent research is helping us understand just how vital it truly is for brain health. A new study, highlighted by CTV News, suggests that a decrease in deep sleep may significantly increase the risk of developing Alzheimer’s disease.

Deep sleep, also known as slow-wave sleep, is the stage of rest when the brain consolidates memories and clears out harmful waste, including the amyloid-beta proteins associated with Alzheimer’s. As we age, the amount of deep sleep we get naturally declines. This study found that lower levels of deep sleep in older adults were linked to higher levels of these harmful proteins in the brain, potentially raising the risk of cognitive decline.

The findings emphasize the importance of prioritizing quality sleep, especially as we age. Establishing healthy sleep routines, limiting screen time before bed, and creating a calm sleep environment can all support deeper, more restorative sleep.

Curious to learn more about the sleep-Alzheimer’s connection?