New research suggests that excess fat stored around the waist, known as central obesity or visceral fat, may significantly increase the risk of heart failure. This heightened risk is primarily attributed to inflammation, a key finding presented at the American Heart Association’s EPI|Lifestyle Scientific Sessions 2026.
The Distinct Link Between Visceral Fat and Heart Failure
The study revealed a stronger connection between higher visceral fat levels and heart failure risk compared to overall body weight. Higher waist measurements identified increased risk even when body mass index (BMI) appeared normal. This highlights that the location of fat storage might be more critical than total weight when assessing heart health.
Measurements of higher visceral fat levels were more strongly linked to heart failure risk than overall body weight.
The research suggests that inflammation may be the underlying reason why abdominal fat is particularly detrimental to cardiovascular health. This finding underscores the potential for targeted interventions based on fat distribution rather than just overall adiposity.
Inflammation: A Crucial Mediator
Systemic inflammation was identified as a key factor in the relationship between central obesity and heart failure. The study found that approximately 25% to 33% of the link between abdominal fat and heart failure appeared to be explained by this inflammatory process.
This mediating role of inflammation is highly significant. It suggests that reducing inflammation levels could be a potential treatment strategy to lower heart failure risk in individuals with central obesity. Targeting inflammation could offer a new avenue for preventive care.
Key Study Observations
- During a median follow-up of 6.9 years, 112 adults developed heart failure.
- Elevated measurements of waist circumference and waist-to-height ratio were associated with increased heart failure risk, while high BMI was not.
- Participants with higher inflammation levels (measured by blood tests) were more likely to experience heart failure.
- Inflammation accounted for approximately one-quarter to one-third of the association between waist fat measures and heart failure risk.
Clinical Implications and Future Care
The findings have significant implications for preventive health strategies. Monitoring waist size and inflammation may allow clinicians to identify individuals at higher risk earlier and implement prevention strategies before symptoms manifest.
This research strongly supports integrating measures of central adiposity, such as waist circumference, into routine preventive care. Such measures could become vital tools for early risk assessment and personalized interventions.
About the Research
The analysis included health data from 1,998 African American adults participating in the Jackson Heart Study. Participants were enrolled between 2000-2004, aged 35-84 years (average 58 years; 36% women), and did not have heart failure at enrollment. They were followed for a median of 6.9 years through 2016.
Researchers assessed body fat using standard measurements including weight, BMI, waist circumference, and waist-to-height ratio. Blood samples were collected and tested for high-sensitivity C-reactive protein, a widely recognized marker of inflammation.
Important Note on Findings
This study's findings are considered preliminary as they are from a research abstract presented at a scientific meeting and have not yet undergone peer review and full publication in a scientific journal. Researchers also noted they did not have access to heart failure subtypes for participants.