HealthDay highlighted research by Jennifer Ailshire of the USC Leonard Davis School about the increase in inadequate sleep among Americans. Ailshire found that 28.6 percent of respondents self-reported inadequate sleep in 2004, compared to 32.9 percent in 2017. The study also showed that African-Americans and Hispanics have a more severe sleep surfeit. “If you talk to people, the things you hear most often are economic insecurity and economic anxiety,” she said. “People are staying up worrying about things.” WebMD also featured the study.