Nutrient Composition of Foods Represented in the U.S. Food and Nutrient Database for Dietary Studies, 2013-2023

The study analyzed changes in nutrient composition in the U.S. Food and Nutrient Database (FNDDS) over ten years across five biennial cycles from 2013 to 2023. Researchers examined 63 nutrients and found that most of them showed no clear linear trend over the entire period. Statistical analysis revealed differences in nutrient composition between individual cycles, but standardized effects were small. The only notable change was a possible increase in polyunsaturated fatty acids and linoleic acid, which may reflect changes in fat quality. Comparison of data from 2019-20 and 2021-23 showed very similar results, suggesting that the COVID-19 pandemic had no major impact on the composition of foods in the database.