Is visceral fat really a coronary risk factor? A multi-detector computed tomography study

Area of Science:

• Cardiology
• Metabolic Health
• Radiology

Background:

• Metabolic syndrome (MS) is a known risk factor for arteriosclerotic disease.
• Visceral fat accumulation contributes to arteriosclerotic disease development alongside other risk factors.

Purpose of the Study:

• To determine if visceral fat is an independent risk factor for coronary artery disease.
• To investigate the relationship between visceral obesity and coronary stenosis.

Main Methods:

• Analysis of 3157 patients using multi-detector computed tomography (MDCT) and computed tomographic angiography.
• Measurement of visceral fat area at the umbilical level; visceral obesity defined as ≥ 100 cm².
• Assessment of traditional coronary risk factors including hypertension, dyslipidemia, diabetes mellitus, family history, and smoking.

Main Results:

• A significant difference in coronary stenosis incidence was observed between visceral obesity and non-visceral obesity groups.
• Multivariable analysis identified age, gender, dyslipidemia, diabetes mellitus, and visceral-to-subcutaneous fat ratio as factors affecting coronary stenosis.
• Visceral obesity itself was not an independent predictor of coronary stenosis.

Conclusions:

• Visceral obesity is strongly associated with the presence of multiple coronary risk factors.
• While linked to heart disease, visceral fat's role as an independent coronary risk factor requires further clarification, as it often clusters with other risk factors.