Secular trends in dietary intake in the United States.

  title={Secular trends in dietary intake in the United States.},
  author={Ronette R. Briefel and Clifford L. Johnson},
  journal={Annual review of nutrition},
This review focuses on dietary intake and dietary supplement use among the U.S. population age 1-74 based on four National Health and Nutrition Examination Surveys conducted in 1971-74, 1976-80, 1988-94, and 1999-2000. Secular trends in intake of energy, macronutrients, cholesterol, sodium, calcium, iron, folate, zinc, vitamins A and C, fruits, vegetables, and grain products are summarized. During the 30-year period, mean energy intake increased among adults, and changed little among children… CONTINUE READING
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