Dietary Supplement Use: United States, August 2021-August 2023.

Source: PubMed, NCBI / U.S. National Library of Medicine

This report presents estimates of any dietary supplement use in the past 30 days and number of dietary supplements taken among youth ages 0-19 years and among adults age 20 and older in the United States during August 2021-August 2023 as well as trends in use from 2013-2014 through August 2021-August 2023. National Health and Nutrition Examination Survey (NHANES) 30-day dietary supplement use questionnaire data were assessed. Analyses accounted for the complex survey design including nonresponse, noncoverage, and differential probability of selection. Variance estimates were computed using Taylor series linearization. Statistical comparisons were performed using linear regression for increasing or decreasing trends or using t tests for comparisons between groups. Trend tests over time were performed using orthogonal polynomial regression with linear and quadratic terms and accounting for the unequal duration and spacing of time between each survey cycle. During August 2021-August 2023, 35.7% of youth ages 0-19 years and 60.2% of adults age 20 and older used a dietary supplement in the past 30 days. Two or more dietary supplements were used by 11.3% of youth and 38.7% of adults. Use of two or more dietary supplements increased among youth and adults from 2013-2014 through August 2021-August 2023. Use of any dietary supplement also increased among adults.