How does sleep affect Alzheimer's risk?

Sleep significantly affects the risk of developing Alzheimer's disease, primarily through the role that deep sleep plays in the brain's self-cleansing processes. Deep sleep activates a glymphatic system in the brain, which acts like a dishwasher, washing away beta amyloid and tau proteins—both closely linked to Alzheimer's 1.

Additionally, lifestyle habits that incorporate adequate sleep alongside regular exercise, a healthy diet, and social engagement drastically reduce Alzheimer's risk, possibly more than genetic factors do 2. Chronic sleep deprivation, conversely, exacerbates inflammation and accelerates neurodegeneration, emphasizing the need for protective sleep practices 3.