Energy balance
High cardiorespiratory fitness (CRF) mitigates or eliminates the 'obesity paradox' in heart failure, meaning overweight patients with high CRF do not have better survival than normal-weight patients with low CRF.
For heart failure patients, being overweight is not inherently protective if you are unfit. High cardiorespiratory fitness (CRF) is the key determinant of survival. Focus on improving your fitness through exercise (like the 6-minute walk test or CPX) rather than just focusing on BMI, as high fitness eliminates the 'obesity paradox' survival advantage.
In a study by Lavie et al... the obesity paradox was not evident among those with high CRF. However, among those with low CRF, BMI remained a significant predictor of mortality... findings from the Veterans Exercise Testing Study (VETS) revealed that, after adjusting for METs achieved, the survival advantage previously observed in individuals with obesity was no longer significant.
Why this rating
Based on observational studies and meta-analyses cited.
Source
The Treatment of Obesity in the Context of the Obesity Paradox in Patients with Heart Failure: A Narrative Review
Pamela L. Alebna et al. · Current Cardiology Reports · 2025
DOI 10.1007/s11886-025-02333-5
More from this paper
- GLP-1 receptor agonists (semaglutide) and dual GLP-1/GIP agonists (tirzepatide) significantly improve cardiovascular outcomes and quality of life in patients with heart failure with preserved ejection fraction (HFpEF) and obesity, though they carry a risk of lean mass loss.Good
- Anti-obesity medications (AOMs) cause disproportionate loss of lean mass (skeletal muscle), which may worsen frailty and functional capacity in heart failure patients, necessitating concurrent resistance training and protein intake.Good
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