To the Editor: Dr Banks and colleagues1 found a significant difference between the prevalence of diabetes, hypertension, and cardiovascular diseases between the United States and England, even when using biomarkers to control for differences in diagnosis or self-reported disease. Short sleep duration has been implicated as a risk factor for hypertension,2 increased C-reactive protein,3 and glucose intolerance,4 all biomarkers that showed a difference between populations.
Thorn CF. Comparison of Health Status Between the United States and England. JAMA. 2006;296(19):2312–2313. doi:10.1001/jama.296.19.2312-b
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