research published by the american heart association in their journal, circulation, is shedding light on
obesity
and its impact on cardiovascular health.
the
study
suggests that people with abdominal obesity or excess fat around the midsection and organs have an increased risk of heart disease even if their body mass index (bmi) is within a healthy range.
what is abdominal obesity?
abdominal
obesity, sometimes referred to as visceral adipose tissue, or vat, is a common cardiovascular disease risk marker. vat is determined by waist circumference, the ratio of waist circumference to height (taking body size into account) or waist-to-hip ratio and has been shown to predict cardiovascular death independent of bmi.
while high waist circumference or low waist-to-hip ratio could mean an increased risk of heart disease, abdominal obesity is also linked to fat accumulation around the liver that can lead to fatty liver disease, which adds to cardiovascular disease risk.
“studies that have examined the relationship between abdominal fat and cardiovascular outcomes confirm that visceral fat is a clear health hazard,” said tiffany m. powell-wiley, chair of the writing committee and chief of the social determinants of obesity and cardiovascular risk laboratory at the national heart, lung, and blood institute in bethesda, maryland. “the timing of this information is important because the obesity epidemic contributes significantly to the global burden of cardiovascular disease and numerous chronic health conditions that also impact heart disease.”
the researchers note that abdominal obesity is so risky that people who are overweight, or living with obesity based on their bmi, could still have lower risk of cardiovascular issues if they have lower levels of fat tissue around their midsection. this concept is called “metabolically healthy obesity”.