The Living Guidelines: Weight Management Suggest Revisions to the CLASS I Guidelines

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Class I Guidelines
Goal: BMI: 18.5 to 24.9 kg/m², Waist circumference: men <40 inches (102 cm), women <35 inches (89 cm)


 * 1) It is useful to assess BMI and/or waist circumference on each visit and consistently encourage weight maintenance / reduction through an appropriate balance of physical activity, caloric intake, and formal behavioral programs when indicated to maintain/achieve a BMI between 18.5 and 24.9 kg/m². (Class I Level of Evidence: B)
 * 2) The initial goal of weight loss therapy should be to reduce body weight by approximately 10% from baseline. With success, further weight loss can be attempted if indicated through further assessment. (Class I Level of Evidence: B)
 * 3) If waist circumference (measured horizontally at the iliac crest) is ≥35 inches (89 cm) in women and ≥40 inches (102 cm) in men, it is useful to initiate lifestyle changes and consider treatment strategies for metabolic syndrome as indicated. (Class I Level of Evidence: B)