Examining diet trends in the United States


An investigation looks into how the US diet has change since 2003.

The average American diet has changed over the past 30 or so years, with a decrease in home-cooked meals and, in the late 1990s, a proliferation of convenience foods.1 An investigation in JAMA Network Open examines the trends in the nutritional quality of the foods consumed from major food sources in the United States.

The investigators included respondents from 8 National Health and Nutrition Examination Survey cycles, 2003 to 2018, who had valid dietary memories. The average diet quality of foods, which included meals, snack, and beverages, were characterized by American Heart Association diet score (range, 0-80, with higher scores indicating healthier diets), the Healthy Eating Index 2015 (range, 0-100, with higher scores indicating healthier diets), and their components.

Using the American Heart Association diet score, a poor diet was defined as less than 40.0% adherence (score, <32.0); intermediate diet as 40.0% to 79.9% adherence (score, 32.0-63.9); and ideal as 80.0% or greater adherence (score, ≥64.0). Read More…