The Impact of Sleep Quality on Brain Ageing: Insights from Recent Research

The Study on Sleep Quality and Brain Ageing

A new study published in Neurology, the medical journal of the American Academy of Neurology, examines how good sleep impacts brain ageing. The study followed 589 participants with an average age of 40, who completed sleep questionnaires focused on six characteristics: short sleep duration, bad sleep quality, difficulty falling asleep, difficulty staying asleep, early morning awakening, and daytime sleepiness.

Key Findings of the Study

Five years later, the participants underwent brain scans that evaluated signs of brain shrinkage, a known indicator of ageing. Results indicated that those in their 40s experiencing poor sleep displayed higher brain ageing symptoms by their late 50s. Particularly, the average brain age correlated with sleep issues: the middle-risk group's brain was 1.6 years older than the low-risk group, while the high-risk group's was 2.6 years older.

• Bad sleep quality
• Difficulty falling and staying asleep
• Early morning awakening

Participants were categorized into low, middle, and high-risk based on their sleep problems. Approximately 70% started in the low-risk category.

Understanding the Risks of Poor Sleep

Experts warn that accelerated brain ageing is linked to cognitive decline, increased risk of dementia, and overall deteriorating quality of life.

Improving Sleep Quality

Improving sleep hygiene is essential. Suggestions include establishing a consistent sleep schedule, creating a relaxing bedtime routine, and transforming the bedroom into a restful environment. Experts stress the importance of prioritizing sleep as part of a healthy lifestyle.