Heart failure is a serious condition in which the heart cannot pump blood as well as it should. It can lead to fatigue, shortness of breath, and a reduced quality of life.
Many people believe that being overweight is the main risk factor for heart problems. However, new research suggests that where fat is stored in the body may be even more important than total body weight.
The findings were presented at the American Heart Association’s EPI|Lifestyle Scientific Sessions 2026, a major scientific meeting focused on heart health, prevention, and lifestyle factors.
The study shows that fat stored around the waist, also known as belly fat or visceral fat, may significantly increase the risk of heart failure. This effect appears to be largely driven by inflammation in the body.
Visceral fat is different from the fat that lies just under the skin. It is stored deep inside the abdomen, surrounding important organs such as the liver and intestines. Because of its location, this type of fat can affect how the body functions in ways that are not always obvious.
In this study, researchers found that people with larger waist sizes had a higher risk of developing heart failure, even if their overall body weight was considered normal. This means that someone with a normal body mass index, or BMI, could still be at risk if they carry excess fat around their waist.
BMI is a common measure used to estimate whether a person has a healthy weight based on their height and weight. However, it does not show where fat is stored in the body. This study suggests that BMI alone may not be enough to identify people at risk of heart disease.
The researchers also discovered that inflammation plays a key role in linking belly fat to heart failure. Inflammation is the body’s natural response to injury or infection. However, when inflammation becomes long-lasting, it can damage tissues and organs, including the heart.
To measure inflammation, the researchers looked at a substance in the blood called C-reactive protein. Higher levels of this marker indicate higher levels of inflammation. They found that people with more belly fat tended to have higher inflammation levels, and these individuals were more likely to develop heart failure over time.
The study followed nearly 2,000 adults over an average period of almost seven years. None of the participants had heart failure at the beginning of the study. Over time, 112 people developed the condition. Those with larger waist measurements and higher waist-to-height ratios had a greater risk.
Interestingly, overall body weight and BMI were not strongly linked to heart failure in this study. This suggests that fat distribution, rather than total fat, may be a more important factor.
The researchers estimated that inflammation explained about one-quarter to one-third of the link between belly fat and heart failure. This means that reducing inflammation could potentially lower the risk, although more research is needed to confirm this.
Experts say these findings could change how doctors assess heart disease risk. Measuring waist size is simple and inexpensive, and it may help identify people who need early intervention. Lifestyle changes such as healthy eating, regular physical activity, and stress management may help reduce both belly fat and inflammation.
However, the study does have some limitations. It did not examine different types of heart failure separately, so the results apply to heart failure in general. Future research will need to explore how belly fat affects different forms of the condition and whether reducing inflammation can directly prevent heart failure.
The study was based on participants from the Jackson Heart Study, which focuses on African American adults living in Jackson, Mississippi. While this provides valuable information, more studies in other populations are needed to confirm the findings.
Overall, this research highlights an important message. A person can appear to have a healthy weight but still carry hidden risks if they have excess fat around the waist. Paying attention to waist size, not just weight, may be key to protecting heart health.
In conclusion, the study suggests that belly fat is not just a cosmetic issue but a serious health concern. Its strong link to inflammation and heart failure risk shows that managing abdominal fat should be an important part of disease prevention.
While more research is needed, these findings support the idea that simple measures like waist circumference could improve early detection and help reduce the burden of heart disease in the future.
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