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ContextThe prevalence of obesity has increased substantially since the 1980s. While immigrants are the fastest growing segment of the US population, little is known about obesity or clinician counseling about diet and exercise in this group.ObjectivesTo estimate the prevalence of obesity among immigrant subgroups and quantify the magnitude of the association with duration of US residence, and to describe reported diet and exercise counseling by birthplace, race, and ethnicity.Design, Setting, and ParticipantsCross-sectional study using data from the 2000 National Health Interview Survey.Main Outcome MeasuresBody mass index (BMI, measured as weight in kilograms divided by the square of height in meters) based on self-reported height and weight measurements, and self-reported rates of diet and exercise counseling.ResultsOf 32 374 respondents, 14% were immigrants. The prevalence of obesity was 16 …