A recent study in which 1,440 women from various ethnic backgrounds were interviewed, revealed that African American women were 12% more likely than Caucasian women (8%) to have Short sleep, and Long sleep (11% vs 9%). The study also indicates that eastern European women are77% more likely than European American women to experience insomnia (70%), whereas English speaking Caribbean women are least likely to have insomnia (34%). This may place African American women at higher risk of medical problems associated with extreme sleep durations.
J Nati Med Assoc. 2008 Jul; 100(7) ; 868

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