Skip to main content

Michael Blaha

Dr. Michael J. Blaha, MD, MPH — Professor of Cardiology and Epidemiology at Johns Hopkins Medicine; Director of Clinical Research for the Ciccarone Center for the Prevention of Cardiovascular Disease

Aug 14, 2026

2:55
What did you find?
2:56
In many patients, the waist circumference and waist-hip ratio is a superior measure of body habitus and, and cardiovascular risk.
3:05
Particularly where this comes out the most is in patients who actually have normal weight by BMI or overweight by BMI.
3:12
Uh, because these patients might be told, well, they don't have obesity, but that might be hiding a large amount of fat and a small amount of lean muscle mass that puts patients at high risk.
3:22
So patients who have normal weight or patients who are overweight but have a proportionally higher waist circumference or waist-hip ratio are at markedly higher cardiovascular risk than those same patients who, you know, l- largely have lean muscle mass and, uh, have a low waist circumference relative to their BMI.
3:40
And even when you have obesity, the waist circumference and waist-hip ratio add on to this evaluation of obesity by the BMI and find out which patients are truly at the highest risk, whose weight is directed towards the waist, directed towards the abdomen where that fat tissue is highly metabolically active, inflammatory, and leads to these problems that we're so familiar with.
5:34
What are some of the limitations around using waist circumference and waist to hip ratio?
5:39
There's really no limitation per se, but the biggest thing is it's not in practice in an everyday way like BMI is.
15:39
What did you find?
15:41
In many patients, the waist circumference and waist-hip ratio is a superior measure of body habitus and, and cardiovascular risk.
15:49
Particularly where this comes out the most is in patients who actually have normal weight by BMI or overweight by BMI.
15:56
Uh, because these patients might be told, well, they don't have obesity, but that might be hiding a large amount of fat and a small amount of lean muscle mass that puts patients at high risk.
16:06
So patients who have normal weight or patients who are overweight but have a proportionally higher waist circumference or waist-hip ratio are at markedly higher cardiovascular risk than those same patients who, you know, l- largely have lean muscle mass and, uh, have a low waist circumference relative to their BMI.
16:25
And even when you have obesity, the waist circumference and waist-hip ratio add on to this evaluation of obesity by the BMI and find out which patients are truly at the highest risk, whose weight is directed towards the waist, directed towards the abdomen where that fat tissue is highly metabolically active, inflammatory, and leads to these problems that we're so familiar with.
18:18
What are some of the limitations around using waist circumference and waist-hip ratio?
18:21
ratio?There's really no limitation per se, but the biggest thing is it's not in practice in an everyday way like BMI is.

We value your privacy

We use cookies to understand how you use our platform and to improve your experience. Click “Accept All” to consent, or “Decline non-essential” to opt out of non-essential cookies. Read our Privacy Policy.