In the 19th century, researchers developed BMI (Body Mass Index) as a tool to measure the average human body. Since then, it has become an internationally recognized metric for assessing obesity risk. However, BMI has limitations and should not be the sole determinant of health status. As a result, researchers have been exploring alternatives, such as using the waist-to-hip ratio (WHR) instead of BMI. A new study published in JAMA Network Open found that maintaining a lower waist-to-hip ratio (WHR) and following a healthier diet during middle age are linked to better brain health and cognitive function later in life. The study showed that a lower waist-to-hip ratio improves working memory and executive function in older adults. These findings suggest that focusing on diet improvements and reducing central obesity during midlife (ages 48-70 years) can lead to better brain and cognitive health in old age.
Waist-Hip Ratio (WHR)
The waist-hip ratio compares the circumference of the waist to the circumference of the hips. Health professionals commonly use the waist-hip ratio to assess health and identify the risk of developing major health disorders, such as diabetes, asthma, or Alzheimer’s disease. Research shows that people with “apple-shaped” bodies (more weight around the waist) face greater health risks than those with “pear-shaped” bodies (more weight around the hips).
Measuring Your Waist and Hip
Your doctor or nurse can help with measuring your waist and hip circumferences. However, you can do it yourself as follows:
- Measure your waist: Wrap a tape measure snugly around your waist at its narrowest point (typically near the belly button). Write down the measurement.
- Measure your hips: Place the tape measure around the widest part of your hips. Note this number.
- Calculate the ratio: Divide your waist circumference by your hip circumference using a calculator.
- Interpret the results: According to World Health Organization, a waist-to-hip ratio of:
- ≥0.90 for men or ≥0.85 for women indicates abdominal obesity as defined by the World Health Organization (WHO).
- >1.0 for either gender reflects significantly increased health risks.
Measuring your waist
Measuring your hips
The Waist-Hip Ratio Calculator
Waist-to-hip ratio chart
