Research

Mixed

In individuals with a normal BMI (18.5–24.9 kg/m2), high body fat percentage (Normal Weight Obesity) is associated with a significantly higher prevalence of cardiometabolic dysregulation and, specifically in women, an independent increase in cardiovascular mortality risk.

If you have a normal BMI, do not assume you are metabolically healthy. High body fat percentage (Normal Weight Obesity) is a significant risk factor for heart disease and death, especially in women. You should assess your body composition (e.g., via DEXA or bioimpedance) rather than relying solely on your weight. Focus on building lean muscle and reducing body fat through resistance training and nutrition, even if your weight stays the same.

GoodQualifiesHIGH confidence
Normal weight obesity, defined as the combination of normal BMI and high BF content, is associated with a high prevalence of cardiometabolic dysregulation, metabolic syndrome, and CV risk factors. In women, NWO is independently associated with increased risk for CV mortality.
Abel Romero‐Corral et al. · European Heart Journal · 2009

Why this rating

Large sample size (n=6171), long follow-up (median 8.8 years), and rigorous adjustment for confounders, though it is an observational cohort study.

Source

Normal weight obesity: a risk factor for cardiometabolic dysregulation and cardiovascular mortality

Abel Romero‐Corral et al. · European Heart Journal · 2009

DOI 10.1093/eurheartj/ehp487

cohort · n=6171Cited 678×
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DOI resolved against Crossref · corpus check 2026-06-10

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