A prominent neurologist has issued a stark warning to millions across the UK, revealing that a common sleep habit many consider harmless could be silently damaging brain health and significantly increasing the risk of devastating neurological conditions.
Dr. Heidi Moawad, a respected clinical neurologist and professor, has highlighted the profound dangers associated with chronic sleep deprivation—a widespread issue in today's fast-paced society where burning the candle at both ends has become normalised.
The Silent Threat to Your Brain
Speaking to Global Health, Dr. Moawad explained that consistently skipping crucial hours of rest doesn't just leave you feeling groggy—it actively contributes to long-term cognitive decline. "In the short term, not getting enough sleep can affect your mood, your ability to concentrate, and your memory," she stated.
But the real danger lies in the cumulative effect. "Over years, or even decades, not getting enough sleep can increase your risk of developing dementia and Alzheimer's disease," Dr. Moawad warned, pointing to growing scientific evidence linking poor sleep patterns to neurodegenerative diseases.
Why Your Brain Needs Those Crucial Hours
The neurologist detailed the biological processes that make sleep essential for cognitive maintenance. During deep sleep stages, the brain activates its glymphatic system—a crucial cleaning mechanism that flushes out toxic proteins and waste products that accumulate during waking hours.
Without sufficient sleep, this cleansing process gets disrupted, allowing harmful substances like beta-amyloid plaques (strongly associated with Alzheimer's disease) to build up in the brain tissue.
Recognising the Warning Signs
Many Britons might be damaging their brains without realising it. Key indicators of problematic sleep patterns include:
- Consistently sleeping less than 7 hours per night
- Frequent waking during the night
- Relying on alarm clocks to wake up
- Needing caffeine to function throughout the day
- Experiencing "brain fog" or memory lapses
Protecting Your Cognitive Future
Dr. Moawad emphasises that it's never too late to improve sleep habits and potentially reverse some damage. She recommends establishing a consistent sleep schedule, creating a dark and cool sleeping environment, and avoiding screens for at least an hour before bedtime.
For those struggling with persistent sleep issues, she advises consulting healthcare professionals rather than self-medicating or ignoring the problem. "Prioritising sleep isn't a luxury—it's a necessity for preserving your brain health and cognitive function throughout your life," Dr. Moawad concluded.
