Science2020sUnited Stateshigh confidence

In 2023, 27.1% of US young adults aged 18–34 years (about 19.9 million people) reported having multiple chronic conditions (2 or more).

Notes on verification

Confirmed by CDC Preventing Chronic Disease study and independently corroborated by PubMed, PMC full-text, and ResearchGate citation of the same peer-reviewed research. [tier=silver indep_score=0.925 clusters=2 claim_tier=notable]

Sources