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  1. Total Diet Study

Total Diet Study Design

CFSAN/Office of Analytics and Outreach

To conduct the Food and Drug Administration’s Total Diet Study (TDS), we buy samples of food at retail outlets throughout the U.S., prepare the foods as they would be consumed, and analyze them, to measure levels of selected pesticide residues, industrial chemicals, radionuclides, and toxic and nutrient elements. We use the data to calculate estimates of annual dietary intakes of those contaminants and nutrients by the U.S. population.

About every 10 years, we update the list of foods to be tested and our estimates of the amounts that consumers eat of those foods, to reflect changing eating patterns in the U.S. Likewise, we periodically update the methods we use to analyze the foods.

If you have questions about the Total Diet Study, email TDS@fda.hhs.gov

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