India
A recent study has unveiled a startling link between poor sleep and accelerated brain ageing, revealing that sleep issues could add up to three years to the brain’s functional age. Published by researchers aiming to better understand the long-term health effects of sleep quality, the findings underscore the importance of good sleep habits for cognitive preservation as we grow older.
The study involved over 3,000 participants and used MRI scans to assess the structural changes in their brains. By comparing participants’ sleep patterns and cognitive abilities, scientists discovered that individuals who experienced sleep problems—such as insomnia, frequent waking, or inconsistent sleep duration—showed significant signs of early brain ageing. These symptoms included a decline in memory, decision-making, and overall cognitive function.
“Our results suggest that chronic sleep issues could make the brain age more rapidly, by as much as three years,” says Dr. Susan Harrington, lead researcher of the study. “This highlights the critical need for prioritizing sleep, especially in middle-aged and older adults, to maintain cognitive health.”
Sleep is known to play an essential role in the brain’s ability to repair itself and consolidate memory. Poor sleep disrupts these processes, leading to wear and tear that, over time, may mirror accelerated ageing. The study also noted that those who addressed their sleep issues with improved sleep hygiene, therapy, or other treatments saw reduced symptoms of cognitive decline.
The research team hopes these findings will raise awareness about the link between sleep and brain health, encouraging people to make sleep a top priority. Experts recommend at least 7-9 hours of quality sleep per night for optimal health, along with maintaining a consistent sleep schedule and creating a restful sleep environment.
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