Scientists discover why poor sleep may harm some brains more
New research from Edith Cowan University indicates that sleep habits and specific genetic variants of the AQP4 gene interact to influence brain health. The study suggests that poor sleep may accelerate grey matter loss in individuals with certain genetic profiles, potentially increasing Alzheimer's risk.
Why it matters
Understanding the link between genetics and sleep hygiene offers a potential modifiable pathway for early intervention in neurodegenerative diseases.
New research from Edith Cowan University (ECU) suggests that sleep habits and genetics may interact to influence subtle brain and cognitive changes associated with Alzheimer's disease years before noticeable symptoms develop.
The study, conducted by ECU's Centre for Precision Health (CPH), examined the aquaporin-4 (AQP4) gene. This gene helps control the movement of fluid through the brain, a function that supports the organ's natural waste-clearing system.
The Brain's Overnight Waste Removal System
The brain's waste-removal process becomes especially active during sleep. Scientists believe it helps clear potentially harmful proteins, including proteins associated with Alzheimer's disease.
Researchers found that the effects of sleep appeared to vary depending on which version of the AQP4 gene a person carried.
"Our study shows that individuals carrying certain AQP4 variants showed faster grey matter loss when they reported shorter sleep," researcher Dr. Ayeisha Milligan Armstrong said.
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