alexa Prevalence and trends in obesity among US adults, 1999-2000.
Diabetes & Endocrinology

Diabetes & Endocrinology

Journal of Diabetes & Metabolism

Author(s): Flegal KM, Carroll MD, Ogden CL, Johnson CL

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Abstract CONTEXT: The prevalence of obesity and overweight increased in the United States between 1978 and 1991. More recent reports have suggested continued increases but are based on self-reported data. OBJECTIVE: To examine trends and prevalences of overweight (body mass index [BMI] > or = 25) and obesity (BMI > or = 30), using measured height and weight data. DESIGN, SETTING, AND PARTICIPANTS: Survey of 4115 adult men and women conducted in 1999 and 2000 as part of the National Health and Nutrition Examination Survey (NHANES), a nationally representative sample of the US population. MAIN OUTCOME MEASURE: Age-adjusted prevalence of overweight, obesity, and extreme obesity compared with prior surveys, and sex-, age-, and race/ethnicity-specific estimates. RESULTS: The age-adjusted prevalence of obesity was 30.5\% in 1999-2000 compared with 22.9\% in NHANES III (1988-1994; P<.001). The prevalence of overweight also increased during this period from 55.9\% to 64.5\% (P<.001). Extreme obesity (BMI > or = 40) also increased significantly in the population, from 2.9\% to 4.7\% (P =.002). Although not all changes were statistically significant, increases occurred for both men and women in all age groups and for non-Hispanic whites, non-Hispanic blacks, and Mexican Americans. Racial/ethnic groups did not differ significantly in the prevalence of obesity or overweight for men. Among women, obesity and overweight prevalences were highest among non-Hispanic black women. More than half of non-Hispanic black women aged 40 years or older were obese and more than 80\% were overweight. CONCLUSIONS: The increases in the prevalences of obesity and overweight previously observed continued in 1999-2000. The potential health benefits from reduction in overweight and obesity are of considerable public health importance.
This article was published in JAMA and referenced in Journal of Diabetes & Metabolism

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