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Poor sleep may age the brain faster

2025-11-28 19:23:35Lifestyle SHKRUAR NGA REDAKSIA VOX
Poor sleep may age the brain faster
Poor sleep may age the brain faster

A new study of over 27,000 adults in the UK shows that people with poor sleep quality have brains that appear older than their actual age, according to The Independent.

The researchers used more than 1,000 markers from MRI scans and an artificial intelligence model to estimate "brain age."

The results showed that those with poor sleep habits had an average of one additional year of brain aging compared to chronological age.

The researchers analyzed five sleep factors: chronotype, sleep duration, insomnia, snoring, and daytime sleepiness.

Combining these into a "sleep health score," it was found that each one-point decrease in this score was associated with about six months of additional brain aging.

Late chronotype and too short or too long sleep were more problematic.

An older-looking brain is associated with a higher risk of cognitive decline, dementia, and neurological disease.

Although a year seems like a short time, this change can accumulate over time and significantly impact an individual's mental and cognitive health.

Part of the link between poor sleep and brain aging may be explained by inflammation.

The study found that high levels of inflammation in the blood explained about 10% of the effect.

Inflammation can damage blood vessels, increase the accumulation of toxic proteins, and accelerate the death of nerve cells.

Other processes include damage to the glymphatic system, the brain's waste-clearing mechanism, which is most active during sleep. Poor sleep can slow this system down, allowing harmful substances to accumulate.

Furthermore, irregular sleep is linked to a greater risk of diabetes, obesity, and heart disease, all of which damage the brain.

The main message of the study is simple: good sleep habits are essential for long-term brain health.

Maintaining a regular sleep schedule, avoiding screens and caffeine before bed, and creating a quiet environment can help slow brain aging and preserve cognitive function.


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