Prevalence and determinants of self-reported low-fat-, low-salt-, and vegetarian diets in patients with cardiovascular disease between 1996 and 2019

•A small and decreasing proportion of patients with ASCVD reports a low-salt diet.•Renewed efforts are needed to promote low-salt diets in this population.•While still low, an increasing number of CVD patients reports a vegetarian diet.•Further research is needed on the vegetarian diet's health impact in CVD patients.