While time, convenience and value remain the main determinants of Americans' choices when they eat out, concerns about healthy food have now moved up to fourth place, according to the results of a new consumer survey.

But diners with the healthiest eating styles also had the highest incidence of heart disease, high blood pressure, high cholesterol and type 2 diabetes.

"American adults just don't get serious about nutrition until serious illness sets in," said Christopher Malone, senior vice president of marketing for the ARAMARK food service company, which funded the study.

Read more about the ARAMARK study at http://www.healthday.com/view.cfm?id=528553.