Dietary information has been collected in NHANES since the 1970s.
Researchers and policymakers rely on NHANES data for detailed
information about the foods and beverages that are consumed by the
U.S. population. In addition to providing important national
reference data on food and nutrient intakes that are obtained on
all survey participants, the data help us to learn about food
patterns of ethnic subgroups, the adequacy of diets consumed by
young children and older persons, and the contribution of food to
total nutrient intakes. Total nutrient intakes from food and
dietary supplements can be computed by combining NHANES Dietary
Recall data with household interview dietary supplement
information. Many Federal agencies use NHANES data to evaluate
Federal regulations in the areas of food fortification and human
risk assessment analyses that are used to measure human exposure to
contaminants that are found in food. All of these monitoring and
research applications are dependent on the quality and completeness
of the dietary interview data.
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