定義很寬。
https://www.who.int/news-room/fact-sheets/detail/mental-disorders
Johns Hopkins 說是1/4的人有:
An estimated 26% of Americans ages 18 and older -- about 1 in 4 adults -- suffers from a diagnosable mental disorder in a given year.
這個說的更嚇人:
Mental illnesses are common in the United States. It is estimated that more than one in five U.S. adults live with a mental illness (57.8 million in 2021). Mental illnesses include many different conditions that vary in degree of severity, ranging from mild to moderate to severe.?
https://www.nimh.nih.gov/health/statistics/mental-illness?
好像?mental illness?比Mental disorders嚴重
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