The study is in response to a Program Announcement issued in March 1998 on Diet and Cardiovascular Disease Risk in Children and Adolescents. The Program Announcement, jointly issued by the National Institute of Nursing Research and the NHLBI, sought to encourage research relevant to the development and/or testing of dietary interventions to improve the cardiovascular disease (CVD) risk profiles in children and adolescents, especially those at increased risk for CVD or for development of CVD risk factors because of genetics, family history, socioeconomic status (SES), race/ethnicity, levels of blood cholesterol or blood pressure, or other factors.