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Home > Lifestyle News > Health And Fitness News > Article > Study shows how sleeping habits impact brain health raise stroke risk

Study shows how sleeping habits impact brain health, raise stroke risk

Updated on: 01 February,2024 07:30 AM IST  |  New York
IANS |

The research, published in the Journal of the American Heart Association, shows getting either too much or too little sleep is associated with changes in the brain that have been shown to increase the risk of stroke and dementia later in life

Study shows how sleeping habits impact brain health, raise stroke risk

Representational Image. Pic Courtesy/iStock

Getting either too much or too little sleep is associated with changes in the brain that have been shown to increase the risk of stroke and dementia later in life, according to a study.


The research, published in the Journal of the American Heart Association, focused on two measures of brain health: Matter hyper intensities (WMH), which are lesions on the brain indicating brain ageing, and fractional anisotropy, which measures the uniformity of water diffusion along nerve axons.


More WMH, larger WMH, and lower fractional anisotropy are associated with increased risk of stroke and dementia.


"Conditions like stroke or dementia are the end-stage result of a long process that ends tragically," said Santiago Clocchiatti-Tuozzo, post-doctoral Fellow at Yale University’s School of Medicine, in the US.

"We want to learn how to prevent these processes before they happen."

In one of the largest neuroimaging studies of its kind to date, the team examined brain images of close to 40,000 healthy, middle-aged participants to evaluate how sleeping habits might impact two measures of brain health.

Researchers found that compared with optimal sleep (7-9 hours per night), participants with short sleep had higher risk of WMH presence, larger WMH volume where WMH was present, and lower fractional anisotropy.

Long sleep (averaging more than 9 hours per night) was associated with lower fractional anisotropy and with larger WMH volume, but not with risk of WMH presence.

"These findings add to the mounting evidence that sleep is a prime pillar of brain health," Clocchiatti-Tuozzo said.

"It also provides evidence toward helping us understand how sleep and sleep duration can be a modifiable risk factor for brain health later in life."

Researchers said the study highlights middle age as an important time to adjust our sleeping habits to support brain health.

"Sleep is starting to become a trending topic," Clocchiatti-Tuozzo said.

"We hope this study and others can offer insight into how we can modify sleep in patients to improve brain health in years to come."

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