Population	Adults 18 years or older
Recommendation	Screen all adults for obesity. Patients with a BMI of 30 kg per m2 or greater should be offered or referred to intensive, multicomponent behavioral interventions.
	Grade: B
Screening tests	BMI is calculated from the measured weight and height of an individual. Recent evidence suggests that waist circumference may be an acceptable alternative to BMI measurement in some patient subpopulations.
Timing of screening	No evidence was found about appropriate intervals for screening.
Interventions	Intensive, multicomponent behavioral interventions for obese adults include the following components:
	Behavioral management activities, such as setting weight-loss goals
	Improving diet or nutrition and increasing physical activity
	Addressing barriers to change
	Self-monitoring
	Strategizing how to maintain lifestyle changes
Balance of harms and benefits	Adequate evidence indicates that intensive, multicomponent behavioral interventions for obese adults can lead to weight loss, as well as improved glucose tolerance and other physiologic risk factors for cardiovascular disease.
	Inadequate evidence was found about the effectiveness of these interventions on long-term health outcomes (e.g., mortality, cardiovascular disease, hospitalizations).
	Adequate evidence indicates that the harms of screening and behavioral interventions for obesity are small. Possible harms of behavioral weight-loss interventions include decreased bone mineral density and increased fracture risk, serious injuries resulting from increased physical activity, and increased risk of eating disorders.
Relevant recommendations from the USPSTF	Recommendations on screening for obesity in children and adolescents can be found at http://www.uspreventiveservicestaskforce.org/.