Demographics of Dietary Supplement Use for Skin: An Analysis of NHANES Cross-Sectional Data

Dietary supplement use is common, with reported use by over half of US adults. This cross-sectional study utilized 2015-2016 National Health and Nutrition Examination Survey data. A total of 9971 respondents were surveyed, of which 3704 reported taking dietary supplements for "healthy skin, hair, and nails." Of those reporting skin supplement use, the majority had health insurance and some college education or above. Many respondents were 19 or younger, were of non-Hispanic White race, had a household income of more than $100,000 per year, and some were pregnant. More than two-thirds of the respondents decided to take the supplements on their own rather than at the advice of a healthcare professional, which is quite alarming. This study helps identify demographic groups more likely to consume skin, hair, and nail supplements. Overall, physicians should educate their patients on dietary supplements to avoid drug-supplement interactions and address the factors that influence the use of over-the-counter skin supplements.