people living in the United States reported being less happy in 2018 than they were in 2008. Other countries with similar measures of wealth, social support, and life expectancy saw similar decreases in self-reported happiness scores, including Belgium, Canada, Denmark, France, Japan, New Zealand, and Italy. Researchers interviewed nearly 150,000 people in twenty-six countries to determine the prevalence of generalized anxiety disorder, defined as excessive and uncontrollable worry that adversely affected their life. They found that richer countries had higher rates of anxiety than poor ones.
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