# Assessment Of Overweight And Obesity

ASSESSMENT OF OVERWEIGHT AND OBESITY
The
Heart
Foundation
This resource is inappropriate for use with:
e
children or adolescents under the age of 18 years
very muscular people
Kg
2
Kg/m
pregnant women
(st/lb)
32
those who are very short (less than 150cm) or very tall (greater than 190 cm)
120
30
(18.2)
CALCULATIONS
BODY MASS INDEX (BMI)
110
(17.4)
2
Metric conversion formula = Weight (kg) / height (m)
26
Example of BMI calculation:
Obesity
A person who weighs 78 kilograms and is 177 centimetres tall has a BMI of 25:
100
25
Weight (78kg) / height (1.77m x 1.77m) = 24.9
(15.10)
2
Non-metric conversion formula = [weight (pounds) / height (inches) ] x 704.5
Example of BMI calculation:
90
A person who weighs 165 pounds and is 68 inches (or 5’8”) tall has a BMI of 25.1
(14.2)
{weight (165 pounds) / height (68 inches x 68 inches)} x 704.5 = 25.1
80
(12.8)
CLASSIFICATION OF OVERWEIGHT AND OBESITY
Overweight
18.5
70
RISK OF TYPE 2 DIABETES AND
(11.0)
CARDIOVASCULAR DISEASE
BMI
Waist Circumference (cm)
60
2
(kg/m )
(9.6)
Men
102cm
> 102cm
Healthy
Women
88cm
> 88cm
Underweight
<18.5
50
Healthy
18.5 - 25
Increased
(7.12)
Overweight
25 - 30
Increased
High
Obesity
>30
High
Very High
40
(6.4)
Table adapted from: Preventing and Managing the Global Rpidemic of Obesity
Underweight
Report of the World Health Organisation Consultation of Obesity. WHO, Geneva, June 1997.
NOTES
30
(4.10)
For Maori and Pacific Islands people the upper range for healthy weight and obesity
2
2
should be extended to 26kg/m and 32kg/m respectively.
For Asion populations, BMI definitions should be adjusted downwards.
140cm
150cm
160cm
170cm
180cm
190cm
(4’7”)
(4’11”)
(5’3”)
(5’7”)
(5’11”)
(6’3”)
The health risk from obesity may not be as strong in people over 75 years.
HEIGHT IN CENTIMETRES (FEET & INCHES) — WITHOUT SHOES
This chart is a guideline only and clinical judgement may be needed for some individuals.