

|
Classification of Overweight and Obesity by
BMI, Waist Circumference,
and Associated Disease Risks
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Disease Risk* Relative to Normal Weight and Waist Circumference
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|
BMI
(kg/m2)
|
Obesity
Class
|
Men 102 cm (40 in) or less
Women 88 cm (35 in) or less
|
Men > 102 cm (40 in)
Women > 88 cm (35 in)
|
| Underweight |
< 18.5
|
|
-
|
-
|
| Normal |
18.5 - 24.9
|
|
-
|
-
|
| Overweight |
25.0 - 29.9
|
|
Increased
|
High
|
| Obesity |
30.0 - 34.9
|
I
|
High
|
Very High
|
|
35.0 - 39.9
|
II
|
Very High
|
Very High
|
| Extreme Obesity |
40.0 +
|
III
|
Extremely High
|
Extremely High
|
* Disease risk for type 2 diabetes,
hypertension, and CVD.
+ Increased waist circumference can also be a marker for
increased risk even in persons of normal weight.
SOURCE: National Heart, Lung and Blood Institute
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