1. Understanding the Waist-to-Hip Ratio (WHR)
The **Waist-to-Hip Ratio (WHR)** is a simple calculation used to assess body fat distribution. It is calculated by dividing your waist circumference by your hip circumference.
While BMI is a useful population screening tool, it does not account for where fat is stored. WHR helps identify abdominal adiposity, which is a stronger indicator of metabolic risk than subcutaneous fat stored around the hips and thighs.
2. World Health Organization (WHO) Benchmarks
The World Health Organization (WHO) defines the following risk thresholds based on WHR values:
- For Men: Low Risk ($\le 0.90$), Moderate Risk ($0.91 - 0.99$), High Risk ($\ge 1.00$).
- For Women: Low Risk ($\le 0.80$), Moderate Risk ($0.81 - 0.84$), High Risk ($\ge 0.85$).
3. Visceral Fat and Cardiovascular Risk Factors
A higher WHR indicates a higher concentration of **visceral fat**—the fat stored around internal organs in the abdominal cavity. Research shows that visceral fat is metabolically active and associated with higher risks of cardiovascular disease, type 2 diabetes, and hypertension.
Monitoring your WHR alongside other body composition metrics provides a more complete health assessment. You can estimate your overall body fat percentage using our Body Fat Calculator.
4. Apple vs. Pear Body Shapes
Fat distribution patterns are often described as "apple" or "pear" shapes:
- Apple Shape (Android): Fat is stored primarily around the abdomen, resulting in a higher WHR. This pattern is associated with higher metabolic risks.
- Pear Shape (Gynoid): Fat is stored primarily around the hips and thighs, resulting in a lower WHR. This pattern carries lower health risks. You can identify your body shape silhouette using our Body Shape Calculator.