June 20, 2012

Sleeping Less than Six Hours per Night Means Four Times Greater Stroke Risk

By Dr. Anuj Chandra, M.D., D.ABSM
There is new evidence of the connection between insufficient sleep and stroke. I just returned from the SLEEP conference in Boston, the 26th annual meeting of the Associated Professional Sleep Societies, where the research was presented.

Sleep researchers at the University of Alabama at Birmingham found that people who routinely sleep only six hours a night have a risk of stroke four times greater than people who got seven to eight hours of sleep every night.

One reason this is so significant is that the study looked at people who are not overweight and who are at low risk for obstructive sleep apnea. We know that being overweight is a significant risk factor for stroke, but that was not a factor here.

Since 30% of working adults sleep less than six hours a night, According to the US Centers for Disease Control, this could affect an enormous number of people.

People often overlook insomnia as a sleep issue. They think they just have to put up with it, but there are non-drug treatments for insomnia that work very well. This research shows how important it is to take insufficient sleep seriously. Treatment of insomnia does help reduce stroke. Insomnia needs to be recognized and treated.

The study also found a difference in risk according to racial group. “We find that sleep duration might partially explain the relationship between ethnic differences in stroke symptoms,” according to Megan Ruiter, Ph.D., the study’s lead author and a UAB post-doctoral fellow in the Division of Preventive Medicine in the School of Medicine. “African-Americans had a greater prevalence of short sleep, and they were more likely to have stroke symptoms.”

For more details, read these articles from USAToday and the University of Alabama.