NCHS nutrition data
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      For over 45 years, the National Health and Nutrition Examination Survey (NHANES), a major program of NCHS, has collected comprehensive data on health and nutrition, including dietary intakes. NHANES is an ongoing, nationally representative survey of the U.S. population that combines interviews with standardized physical examinations and laboratory tests conducted in a mobile examination center (MEC). NHANES can directly measure health conditions and provide reliable information on health and disease. NHANES dietary data are collected via 24-hour dietary recall. At the MEC, participants provide details on food and beverages consumed on the preceding day. A second recall is obtained over the telephone 3–10 days later. Data on dietary supplement use during the past month are collected at the household interview and subsequently during the 24-hour recalls. Federal agencies, researchers, health care providers, and policymakers use these data to assess and monitor the nutrition intake and status of the U.S. population as well as to inform nutrition policy and programs. CS301733 actsheets/factsheet_nutrition.pdf
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