Differences in Prevalence of Obesity Among Black, White, and Hispanic Adults — United States, 2006–2008
Source: Morbidity and Mortality Weekly Report (CDC)
The prevalence of obesity in the United States has more than doubled in the past three decades, and certain racial/ethnic populations have been affected disproportionally. Data from the 2003?2004 National Health and Nutrition Examination Survey (NHANES), for which height and weight of adults aged ?20 years are measured by survey staff members, indicated the prevalence of obesity was 45.0% among non-Hispanic blacks, 36.8% among Mexican-Americans, and 30.6% among non-Hispanic whites. This report found smaller prevalences, using height and weight data that were self-reported to BRFSS and, therefore, likely to produce underestimates. However, differences among non-Hispanic blacks, non-Hispanic whites, and Hispanics in this report were similar to those found in the NHANES study: non-Hispanic blacks had the greatest prevalence of obesity, followed by Hispanics and non-Hispanic whites.
At least three reasons might account for the differences in the prevalence of obesity among the study populations observed in this and other studies. First, racial/ethnic populations differ in behaviors that contribute to weight gain. For example, compared with non-Hispanic whites, non-Hispanic blacks and Hispanics are less likely to engage in regular (nonoccupational) physical activity. In addition, differences exist in attitudes and cultural norms regarding body weight. For example, according to one study, both non-Hispanic black and Hispanic women are more satisfied with their body size than non-Hispanic white women; persons who are satisfied with their body size are less likely to try to lose weight. Finally, certain populations have less access to affordable, healthful foods and safe locations for physical activity. Evidence suggests that neighborhoods with large minority populations have fewer chain supermarkets and produce stores and that healthful foods are relatively more expensive than energy-dense foods, especially in minority and low-income communities. Evidence also indicates that minority and low-income populations have less access to physical activity facilities and resources and that traffic and neighborhood safety might inhibit walking.
