High blood pressure is a major public health problem affecting more than 1 billion people worldwide and is the leading cause of mortality and disability globally.
A number of factors can increase the risk of high blood pressure, such as being overweight, lack of exercise, smoking, or a high amount of salt in the diet.
Many people are unaware they have high blood pressure as it rarely has noticeable symptoms.
Therefore, identifying high-risk individuals early and employing intervention strategies such as monitoring diet or increasing exercise may help prevent further damage to blood vessels and the heart.
Circumference measurements are easy, low cost, and previously effective at evaluating the risk of certain diseases.
For example, a large waist circumference are well known to be linked to elevated blood pressure, and a small thigh circumference is linked to diabetes.
However, there are currently no studies that examine the potential of thigh circumference as an indicator of high blood pressure in people with obesity.
In a recent study from Shanghai Jiao Tong University, researchers found that a larger thigh circumference may be linked to lower blood pressure and a reduced risk of heart disease in people with obesity.
They found in overweight and obese men and women, larger thigh circumferences were linked to lower blood pressure.
These findings suggest that carrying more weight on the thighs may be a marker of better heart health in obese and overweight people, who are at a greater risk of heart disease.
Thigh circumference may be useful for targeting obese and overweight people for earlier detection of high blood pressure.
The study is published in Endocrine Connections. The lead author of the study is Dr. Zhen Yang.
The team examined the link between thigh circumference and blood pressure in a population of 9,250 Chinese men and women aged 40 or older, of which 5,348 were overweight and obese, and 4,172 were normal weight.
They found a strong link between larger thigh circumference (more than 55cm in men and 54cm in women) and a lower prevalence of high blood pressure was observed consistently in both men and women.
Whereas those with a small thigh circumference (less than 50cm for women and 51cm for men) were more likely to have elevated blood pressure.
The team says in contrast to stomach fat, leg fat may be beneficial for metabolism.
The most likely cause of this link is that there is more thigh muscle and/or fat deposited under the skin which secretes various beneficial substances that help keep blood pressure in a relatively stable range.
These findings suggest that thigh circumference could potentially be used as a convenient and inexpensive indicator for earlier detection and prevention of high blood pressure and other related complications, such as heart disease, in obese or overweight people.
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