Healthy BMI Range for Women: WHO Standards and Clinical Context

The World Health Organization (WHO) defines the same BMI categories for adult men and women:

Category	BMI (kg/m²)
Underweight	< 18.5
Normal weight	18.5 – 24.9
Overweight	25.0 – 29.9
Obesity Class I	30.0 – 34.9
Obesity Class II	35.0 – 39.9
Obesity Class III	≥ 40.0

Caveats for Women

• Women naturally carry higher essential fat (~12–15% vs. 3–5% men).
• BMI does not distinguish fat vs. muscle; athletic women may be misclassified.
• Fat distribution matters: central (android) obesity confers higher cardiometabolic risk than gynoid (hip/thigh) pattern.
• Pregnancy and menopause shift body composition.

Better Metrics

• Waist circumference (>88 cm / 35 in = elevated risk)
• Waist-to-height ratio (>0.5)
• Body fat % (DEXA, BIA)
• Metabolic health markers (glucose, lipids, BP, liver enzymes)

Use BMI as a screen, not a diagnosis. Individualized assessment is essential.