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. Author manuscript; available in PMC: 2017 Dec 1.
Published in final edited form as: Gastroenterol Clin North Am. 2016 Aug 30;45(4):653–661. doi: 10.1016/j.gtc.2016.07.004

Table 1.

Classifications of Body Mass Index (BMI)

Category BMI (kg/m2) Eligible for Weight Management?
Underweight < 18.5 No
Normal weight 18.5 to 24.9 No
Overweight 25.0 to 29.9 Yes, particularly if risk factors:

  • Increased waist circumference (men >102 cm; women >88 cm)

  • Hypertension, type 2 diabetes mellitus, coronary heart disease, or other conditions associated with overweight/obesity
Class I obesity 30.0 to 34.9 Yes
Class II obesity 35.0 to 39.9 Yes
Class III obesity ≥ 40.0 Yes