What This Means
This research examined the relationship between body fat distribution and high blood pressure (hypertension) in 208 Thai adults, comparing 103 people with normal blood pressure to 105 people with hypertension. The researchers measured various aspects of body composition using a technique called bioelectrical impedance analysis (BIA), which uses small electrical signals to estimate how much fat, muscle, and visceral (belly) fat a person has. They found that people with hypertension tended to be older, more likely to be male, and had higher levels of body fat across multiple measures including body weight, BMI, body fat percentage, fat mass, visceral fat, and waist-to-hip ratio.
The most important finding was that visceral fat — the fat stored deep inside the abdomen around internal organs — was independently linked to hypertension even after accounting for age, sex, and skeletal muscle mass. Specifically, each one-unit increase in visceral fat level was associated with a 16% increase in the odds of having hypertension. In contrast, the amount of skeletal muscle a person had was not independently associated with hypertension in the same analysis. The statistical model that included age, sex, and visceral fat level showed reasonable ability to distinguish between hypertensive and normotensive individuals (AUC = 0.79).
This research suggests that where fat is stored in the body — particularly visceral or abdominal fat — may matter more for blood pressure risk than overall body fatness alone. Measuring visceral fat could potentially offer useful additional information when assessing a person's cardiovascular health risks. However, the authors caution that this was a case-control study using an indirect fat measurement tool, so future studies using more precise imaging methods and following people over time are needed to confirm whether visceral fat accumulation actually causes hypertension.