A quick check often considered more reliable than BMI alone.
A ratio under 0.5 is generally considered healthy for most adults; ratios above 0.5 are associated with increased risk of cardiovascular and metabolic conditions. This is an educational estimate, not a medical diagnosis.
Waist circumference divided by height, same units for both.
Research suggests it correlates well with visceral fat and related health risks.
A commonly cited guideline suggests keeping it below 0.5.