Total nutrient intakes from foods and dietary supplements: What We Eat in America, NHANES 2007–2008

Abstract

The widespread use of dietary supplements (DS) can contribute substantially to nutrient intakes; however, collection methods for DS and food intakes have limited the ability to estimate total nutrient intakes for the U.S. population. As of 2007, DS usage was collected as part of the 24hr dietary recall interview in NHANES. The objective of this research was to estimate total nutrient intakes using DS data in conjunction with What We Eat in America, NHANES 2007–2008. The study sample included nationally representative one-day dietary intake data from 8529 individuals, aged 2yr and older. Intake from foods was collected using the 5-step USDA Multiple-Pass Method. The DS component, administered after the dietary recall, collected data on usage of all vitamins, minerals, herbals, and non-prescription antacids over the same time frame. Use of DS containing vitamin C, reported by 28% of the sample, was most common; vitamin C intake (mean ± SE) was 70.2 ± 5.8 mg/d from all multi- and/or single-nutrient DS and 84.2 ± 3.5mg/d from food. Calcium and vitamin D were the next frequently reported DS nutrients; calcium mean intake (mg/d) from DS was 142 ± 20 and 946 ± 20 from food; total intake, 1088 ± 27. Intake of vitamin D (μg/d) was 4.2 ± 0.5 and 4.6 ± 0.1 from DS and food, respectively; total intake was 8.7 ± 0.5. Further analysis to compare total nutrient intakes between DS reporters and non-reporters will be presented. Funding: ARS, USDA.