Guzey's appendix addresses it directly: Between late 2010/early 2011 and August/September 2015 [1 (a), 2 (a), 3 (a), 4 (a)], CDC had a page on its site titled “

Guzey's appendix addresses it directly: Between late 2010/early 2011 and August/September 2015 [1 (a), 2 (a), 3 (a), 4 (a)], CDC had a page on its site titled “Insufficient Sleep Is a Public Health Epidemic”. More than 2 years before Why We Sleep was published, the page changed the word “epidemic” to “problem”, so that its title became “Insufficient Sleep Is a Public Health Problem”. https://guzey.com/books/why-we-sleep/#possible-origin-of-the-sleeplessness-epidemic-thing https://guzey.com/books/why-we-sleep/#possible-origin-of-the...