Today the Centers for Disease Control and Prevention (CDC) released the first published report to document state-based estimates of self-reported healthy sleep duration for all 50 states and the District of Columbia. On average, 65 percent of adult respondents reported a healthy sleep duration of 7 hours or more in a 24-hour period in 2014, with 35 percent of adults reporting insufficient sleep. Geographic clustering of the lowest prevalence of healthy sleep duration was observed in the southeastern United States and in states along the Appalachian Mountains, and the highest prevalence was observed in the Great Plains states.

“As a nation we are not getting enough sleep,” Dr. Wayne Giles, director of CDC’s Division of Population Health, said in a press release.

The American Academy of Sleep Medicine and the Sleep Research Society recommend that adults should sleep 7 or more hours per night on a regular basis to promote optimal health. Based on this recommendation, the CDC estimates that an estimated 83.6 million U.S. adults sleep less than 7 hours.

Read the report: Prevalence of Healthy Sleep Duration among Adults — United States, 2014