Science2023United Stateshigh confidence

In 2023, 59.5% of US young adults aged 18–34 years (about 43.7 million people) reported at least 1 of 12 selected chronic conditions.

Notes on verification

Multiple independent corroborating sources including the original peer-reviewed CDC PCD study, PMC full text, PubMed listing, and secondary journalistic coverage all confirm the exact figures. [tier=gold indep_score=0.867 clusters=3 claim_tier=notable]

Sources