Research
Energy balance
Obesity severity (Class I, II, III) is directly correlated with increased direct medical costs, with Class III obesity costing up to 3.3 times more than normal weight individuals.
Higher obesity classes (II and III) are associated with significantly higher medical costs (up to 3.3x normal weight). This highlights the economic urgency of addressing obesity, especially in higher severity classes, through early intervention.
GoodSupportsHIGH confidence
total costs among PwO ranged from 1.1-fold (class I) to 3.3-fold (class III) higher.
Why this rating
Based on 15 studies reporting costs by obesity severity.
Source
Costs of obesity, obesity-related complications, and weight loss in the United States: A systematic literature review
Alison M. Bjornson et al. · Journal of Managed Care & Specialty Pharmacy · 2025
DOI 10.18553/jmcp.2025.25051
systematic_reviewCited 3×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Achieving a 5% weight loss over one year results in substantial direct medical cost savings for people with obesity, with savings increasing alongside higher obesity severity.Good
- The presence of obesity-related complications (e.g., Type 2 Diabetes, Hypertension) significantly amplifies medical costs, with costs up to 5.2 times higher for those with multiple complications compared to obesity alone.Good
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