"The nation's biggest cluster of bad sleep ended up in the heart of Appalachia and in a cluster of counties in Ohio, West Virginia, Kentucky, Virginia and Tennessee," Ingraham writes. "In some of these counties, 40 to 50 percent of the sample—and even higher, in some cases— reported difficulty sleeping on at least half of the days in the previous month. By contrast, the research also identified a number of 'coldspots' when it comes to sleep deficiency—places where rates are below average. Wisconsin has a number of these counties, as does Northern Virginia. In many of these counties, rates of sleep difficulty fall below 20 percent."
"Researchers looked at a number of social and demographic factors to see whether anything correlated—obesity, income, education, drinking rates, overall physical and mental health," Ingraham writes. "They found, interestingly, that 'relatively younger individuals of lower socioeconomic status and poorer health were more likely to live in hotspot counties.' People who were generally younger, poorer and in worse health were more likely to live in places with high rates of bad sleep." (For an interactive map click here)