腰臀比计算器

What Is Waist-to-Hip Ratio and Why It Matters

The Waist-to-Hip Ratio (WHR) is a simple measurement that divides waist circumference by hip circumference, producing a single number that reflects how body fat is distributed. The World Health Organization 2008 Expert Consultation report established that a WHR above 0.90 for men and above 0.85 for women indicates abdominal obesity and elevated cardiometabolic risk, independent of overall body weight. The reason WHR is so informative is that fat stored around the waist, particularly visceral adipose tissue surrounding internal organs, is metabolically active and releases inflammatory cytokines that impair insulin sensitivity and raise cardiovascular risk. Fat stored in the hips and thighs, by contrast, is largely subcutaneous and may even be protective. Large prospective studies including the INTERHEART study have shown that WHR predicts myocardial infarction risk more accurately than BMI, especially in populations where normal-BMI individuals still carry central fat.

How to Measure Waist and Hips Correctly

Accurate measurement matters because a 1 centimetre error on the waist can shift your classification. Stand upright with feet together and arms at your sides, breathing normally. Measure waist circumference at the midpoint between the bottom of the rib cage and the top of the iliac crest, which usually corresponds to the narrowest part of the torso. Measure hip circumference at the widest part of the buttocks, keeping the tape horizontal around the body. Take each measurement three times and average the results to reduce error. If your WHR is elevated, the most effective interventions include creating a moderate caloric deficit, prioritising resistance training to preserve lean mass, and reducing added sugars and refined carbohydrates which specifically drive visceral fat storage. Aerobic exercise reduces visceral fat even at modest doses of 150 minutes per week.

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