The association between composite dietary antioxidant index and the metabolic syndrome: NHANES 2007–2018

Abstract

BackgroundMetabolic syndrome (MetS) is a pathological condition. Oxidative stress is intricately linked to MetS, and may be reflected by composite dietary antioxidant index (CDAI). We aimed to explore the association between CDAI and MetS. Methods12,580 participants aged over 20 years were involved. The relationship between CDAI and MetS was examined through binary logistic regression. Subgroup analysis and interaction tests were employed. ResultsThe negative association between high scores on CDAI and the prevalence of MetS were found. Notably, an interaction between CDAI and physical activity in relation to MetS was observed. High scores on CDAI were significantly and negatively linked to MetS prevalence within the active physical activity groups. ConclusionHigher scores on CDAI was significantly associated with lower odds of MetS. An interaction existed between CDAI and physical activity. It is advisable for individuals to enhance their personal scores on CDAI.