What is the relationship between obesity and hypertension?

unit-of-pressure-meter-blood-pressure-care-health.jpgWith the increase of body mass index (BMI), the systolic and diastolic blood pressure levels in the body also increase. Hypertensive patients refer to those with systolic blood pressure ≥140 mm Hg and/or diastolic blood pressure ≥90 mm Hg (1 mm Hg =0.133 kpa), or those who need antihypertensive drugs to control their blood pressure close to normal level (lower than 120/90 mm Hg).

Obese people have a high prevalence of hypertension. The longer obesity lasts, especially for women, the greater the risk of hypertension. When diet control and increased exercise reduce body weight, blood volume, cardiac output and sympathetic nerve activity will decrease, and blood pressure will also decrease.

A summary analysis of 240,000 people in some country shows that the prevalence rate of hypertension for people with BMI=24 is 2.5 times higher than those with BMI<24, and the prevalence rate of hypertension for people with BMI≥28 is 3.3 times higher than those with BMI<24. The prevalence rate of hypertension is 2.3 times higher for men with a waist circumference of 85 cm or more and for women with a waist circumference of 80 cm or more. Some weight loss tests show that after weight loss treatment, systolic blood pressure and diastolic blood pressure also decrease with the decrease of average body weight. The mechanism of hypertension caused by overweight and obesity may be related to insulin resistance metabolic syndrome.

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