Dietary antioxidant intake is associated with heart failure: Results from the NHANES 2003-2019.

Background: Growing evidence has shown that antioxidant diets protect against heart failure (HF). However, the association between the composite dietary antioxidant index (CDAI), an important measure of overall antioxidants in the diet, and HF has received little attention.

Objective: The purpose of this study was to examine the relationship between the CDAI and HF.