Science2020sUnited Stateshigh confidence

In 2023, 78.4% of US midlife adults aged 35–64 years (about 94.8 million people) reported at least 1 chronic condition.

Notes on verification

Confirmed by CDC PCD 2025 peer-reviewed article and corroborated by PubMed, PMC, and CDC summary pages using BRFSS 2013-2023 data. [tier=silver indep_score=0.925 clusters=2 claim_tier=notable]

Sources