Not even one subject among 4,673 12- to 19-year-olds achieved ideal measures in all seven standards for cardiovascular health, according to a study in the journal Circulation. Fewer than 1% had an ideal diet score, and under half achieved ideal measures on five of the seven standards. The analysis was based on information from the 2005-2010 National Health and Nutrition Examination Surveys. Study author Christina Shay of the University of Oklahoma said the good news is that most cardiovascular disease risk factors can be addressed through lifestyle changes. She called for increased emphasis in clinical settings on lifestyle changes for teens. The findings were published in the journal Circulation.