how adults with mental illness age well
1 Approximately 1 in 25 adults in the U.S.â10 million, or 4.2%âexperiences a serious mental illness in a given year that substantially interferes with or limits one or more major life activities.2.  Approximately 1 in 5 youth aged 13â18 (21.4%) experiences a severe mental disorder at some point during their life.