Nutrient intake and supplementation in the United States (NHANES II)

Data from the second United States Health and Nutrition Examination Survey (NHANES II) suggest that almost 35 per cent of the US population 18 to 74 years of age takes vitamin/mineral supplements regularly. Both higher nutrient intake and use of vitamin supplementation are associated with older ages, higher income, higher education level, and White race. Accounting for differences associated with sex, age, race, income, and education, persons with higher nutrient intakes remain more likely to take vitamin supplements.