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Black Americans fare worse than white Americans on nearly every metric of health, and dishearteningly, we have another disparity to add to the list: disordered sleep.
Black Americans are five times more likely to suffer from short sleep duration than white Americans, meaning they slept for six hours or fewer each night, according to a study published in the journal Sleep in June. The study analyzed data from 6,000 participants in the Multi-Ethnic Study of Atherosclerosis, and tellingly, the finding held true even after being adjusted for sex, age, study site and body mass index.
Six hours of sleep per night is considerably less sleep than experts say we need. The National Sleep Foundation recommends that adults sleep for seven to nine hours each night, or risk adverse consequences of insufficient sleep including a higher risk for hypertension, diabetes, depression, obesity and reduced quality of life.
“The high prevalence of short sleep duration among blacks compared to whites may be partly due to a variety of stresses and social and environmental challenges many blacks experience,” study author Dr. Xiaoli Chen of the University of Minnesota told The Huffington Post.
Chen cited social and emotional stress associated with family and job demands, financial stress, and discrimination as factors that might negatively impact sleep.
While previous studies have illustrated the gap in sleep duration between black and white Americans, the overlap between race and sleep is a relatively new area of research, according to The Atlantic.
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