ABSTRACT
BACKGROUND: Dietary supplements (DSs) are used by a large number of people globally. It is widely believed that DSs can improve health, prevent diseases, and replenish vitamin and micronutrient deficiencies. We aimed to determine the prevalence of and factors associated with DS use among the Saudi population and the association between DS consumption and depressive symptoms. Research methodology: This observational cross-sectional study was conducted in 2022. The questionnaire was distributed through an online mode among adult Saudis (18 years or older) living in the Kingdom of Saudi Arabia. The survey included four parts: socio-demographic characteristics, participants' health, lifestyle, and activity, vitamin and mineral supplement use, and a patient health questionnaire (PHQ-9) as a valid and reliable diagnostic tool for depression. Result: Of the 1309 respondents, 1173 were enrolled. The mean age of the participants was 26.3 ± 8.8 (range, 18-24) years, and approximately 14.7% exhibited psychological anxiety while 8.4% experienced psychological depression. The prevalence of DS use among Saudis was found to be relatively high (52.2%). The most commonly used DS was vitamin D (43%). DSs improved depressive symptoms in 49.4% of the participants. Conclusion: The prevalence of DS use is high among the Saudi population, and vitamin D is the most common DS. The use of multivitamins and minerals, especially iron, is associated with improved depressive symptoms; however, further studies are needed to understand the relationship between DS use and depressive symptoms.