Measures of obesity (Edexcel GCSE Biology Combined Science): Flashcards

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Measures of obesity
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BMI formula

mass (kg)height (m)2\frac{\text{mass (kg)}}{\text{height (m)}^2}

BMI below 18.5 indicates

Underweight

BMI 18.5-24.9 indicates

Normal weight

BMI 25-29.9 indicates

Overweight

BMI 30-40 indicates

Moderately obese

Problem with BMI for athletes

Muscle weighs more than fat; high BMI ≠ overweight

Waist-to-hip ratio formula

waist (cm)hip (cm)\frac{\text{waist (cm)}}{\text{hip (cm)}}

WHO waist-to-hip obesity threshold (women)

Above 0.85

WHO waist-to-hip obesity threshold (men)

Above 1.0

High waist-to-hip ratio indicates

More abdominal fat

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