Among US young adults aged 18–34, chronic-condition prevalence increased from 52.5% in 2013 to 59.5% in 2023, and multiple chronic condition prevalence increased from 21.8% to 27.1% over the same period.
Notes on verification
Verbatim statistic from CDC BRFSS-based study published in Preventing Chronic Disease (2025), corroborated by PubMed and PMC full text with matching figures; no contradicting data found. [tier=silver indep_score=0.925 clusters=2 claim_tier=notable]
Sources
- Trends in Multiple Chronic Conditions Among US Adults ... (seed:health_and_medicine)
- https://pubmed.ncbi.nlm.nih.gov/40245168/ (corroboration)
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12007472/ (corroboration)
- https://www.definitivehc.com/blog/chronic-disease-landscape-trends (corroboration)