A new study suggests that abdominal obesity — commonly called a “beer belly” — may be associated with harmful changes in heart structure, with stronger effects seen in men. Researchers found that a high waist-to-hip ratio may be linked to more concerning cardiac remodeling than body mass index (BMI) alone. The team used advanced cardiac MRI to detect subtle changes in heart tissue that aren’t visible with routine tests. The study did not examine participants’ beer or alcohol intake.
Researchers analyzed cardiac MRI scans from 2,244 adults ages 46 to 78. They found that higher BMI was generally associated with enlarged heart chambers across both sexes. In contrast, abdominal obesity was linked to thickening of the heart muscle (concentric hypertrophy) and smaller chamber volumes. These changes were more pronounced in men, particularly in the right ventricle, which pumps blood to the lungs. Investigators suggested this pattern could reflect early cardiac stress related to how abdominal fat affects breathing and lung pressures.
Lead author Jennifer Erley, MD, a radiology resident at University Medical Center Hamburg-Eppendorf, said abdominal obesity and a high waist-to-hip ratio appear to produce a different, potentially more pathological form of remodeling than elevated BMI alone. With concentric hypertrophy, the heart muscle thickens without an increase in overall heart size, reducing chamber volume and the amount of blood the heart holds and pumps. Over time this impairs the heart’s ability to relax and can contribute to heart failure. The authors proposed that the more extensive changes seen in men might reflect earlier or more severe abdominal fat accumulation, but they noted further research is needed.
The findings were presented at the Radiological Society of North America (RSNA) annual meeting in Chicago (November 29–December 3). The study has not yet been published in a peer-reviewed journal.
Independent clinicians not involved in the research said the results are consistent with current understanding of visceral fat’s harms. Mir Ali, MD, medical director at MemorialCare Weight Loss Center, noted abdominal fat increases systemic inflammation, disrupts hormones, and promotes insulin resistance — effects that particularly impact the heart and blood vessels. Kevin Shah, MD, program director at MemorialCare Heart Failure Outreach, emphasized that visceral fat drives inflammation, insulin resistance, and adverse cholesterol patterns, all of which accelerate cardiovascular disease.
Measures and clinical implications
BMI is calculated as weight in kilograms divided by height in meters squared; a BMI of 30 or more is considered obesity for adults. Waist-to-hip ratio is calculated by dividing waist circumference (measured at the narrowest point) by hip circumference (measured at the widest point). Ratios of 0.90 or higher in men and 0.85 or higher in women indicate abdominal obesity and may signal elevated cardiovascular risk. Unlike BMI, waist-to-hip ratio and waist circumference reflect fat distribution and can better capture visceral fat. Experts recommend including waist measurements alongside BMI in routine risk assessments.
Reducing abdominal fat
Visceral fat is difficult to target with spot exercises alone. Overall weight loss through diet, medication, or surgery typically reduces abdominal fat. Clinicians recommend focusing on nutrition quality, resistance training, and consistent physical activity. Practical suggestions include strength training 2–3 times per week, adding 20–30 minutes of daily walking, and reducing refined carbohydrates while increasing protein intake. Small, sustained lifestyle changes can measurably reduce waist size and improve long-term heart health.
