Trends in mean serum total cholesterol among adolescents 12 to 17 years of age by race, sex, and survey year (National Health and Nutrition Examination Survey: 1976–1980,* 1988–1994,* 1999–2004, and 2005–2010). Values are in mg/dL. Mex. Am. indicates Mexican American; and NH, non-Hispanic. *Data for Mexican Americans not available. Source: National Center for Health Statistics and National Heart, Lung, and Blood Institute.