Factors Associated with the Use of Dietary Supplements among African-American Adults

Abstract

The purpose of this study was to examine the prevalence and factors associated with the use of dietary supplements among African-American adults. One hundred and ninety-five (195) African-American adults ages 18 and older completed a self-administered survey that consisted of questions regarding use of supplements, perceived knowledge of supplements, perceived dietary adequacy, sources of information for nutrition and supplement knowledge and demographic information. The overall prevalence of vitamin and mineral use was 63%, the most popular being a multivitamin supplement. The prevalence of nonvitamin and non-mineral supplement use was 41%, the most popular being green tea. Perceived knowledge was a significant factor associated with use; the likelihood of using dietary supplements was significantly higher among those who were perceived to be knowledgeable compared to those who were not knowledgeable. After adjusting for age, sex, income and perceived dietary adequacy, perceived knowledge and education were significantly associated with the use of all types of dietary supplements. The primary sources of supplement knowledge of the participants came from healthcare professionals and the media. Nutrition educators should pay particular attention to the current information sources of the dietary supplements used by their clients.