(PO30-05-22) Trends in Overall and Nutrient-Containing Dietary Supplement Use Among the U.S. Population (≥1y), NHANES 2007–2018

The ePoster content is available to NUTRITION 2022 LIVE ONLINE attendees who are logged in.<br><br>If you are registered, log in and then come back here to use this button.

Presenting Author(s)

AC

Alexandra E. Cowan, PhD
– Postdoctoral Research Fellow, Texas A&M University, College Station, Texas, United States

Co-Author(s)

Janet A. Tooze, PhD
– Professor of Biostatistics and Data Science, Wake Forest University School of Medicine, Winston-Salem, North Carolina, United States
RB

Regan L. Bailey
– Texas A&M University

Disclosure(s):

Alexandra E. Cowan, PhD: No relevant financial relationship(s) with ineligible companies to disclose.

Objectives: DS use is widespread in the U.S. and contributes large amounts of micronutrients to users. The prevalence of DS use over time has been characterized; however, most studies have relied on data from one assessment method. Combining multiple methods of assessment enhances the ability to capture nutrient exposures from DS; additional studies updating prevalence of DS use estimates using this approach are needed, as well as documentation of a classification system for DS products. Thus, the objective was to characterize the prevalence of DS use over time among a nationally-representative sample of the U.S. population (≥1y), using a combined approach of DS assessment and a DS classification system.

Methods: NHANES obtains DS use via a 30-day frequency method and an in-home inventory (Dietary Supplement and Prescription Medicine Questionnaire (DSMQ)), and two 24-hr recalls (24HR). All NHANES cycles with 24HR and DSMQ data were used to characterize DS use and examine trends in any and nutrient-containing (VM-only) DS use, using the DSMQ or ≥1 24HR. Trends in the prevalence of use and selected types of products used were estimated for the population and by sex, age, race/Hispanic origin, family income (PIR ≤130%, 131 to 350%, and >350%), and household food security (food secure vs. insecure). Linear trends were tested using orthogonal polynomials; significance was set at p < 0.05.

Results: DS use increased from 50% in 2007 to 56% in 2018 (p = 0.001). While use of VM-only products increased (46% to 49%; p = 0.029), multivitamin-mineral use decreased (p < 0.001). Single-nutrient DS (e.g., magnesium, vitamins B12 and D), also increased in use (all p < 0.001). Among adults (≥19y), any (54% to 61%) and VM-only (49% to 54%) DS use increased, specifically among men, non-Hispanic Blacks and Hispanics, and low-income (PIR≤130%) adults. Among children (1-18y), any and VM-only DS use remained stable at ~38%, except for children living with food insecurity, where use increased from 24% to 31% over the decade (p=0.035).

Conclusions: The prevalence of any and VM-only DS use in the U.S. increased over time and may be attributable to increases in the use of single-nutrient DS. Differences in DS use exist by population subgroup. This study contributes to a small body of literature that utilizes multiple methods of DS assessment designed to increase the accuracy of DS exposure assessment.

Funding Sources: N/A