Basic science, clinical observation, and epidemiologic studies have all contributed to an emerging body of evidence on the potential role of flavonoids, a group of polyphenolic compounds with antioxidant properties, in the prevention of cardiovascular disease. However, the few existing studies on flavonoids or its food sources have provided inconsistent results, usually focusing on the primary prevention of coronary heart disease mortality. The study used the small grant mechanism (R03) to analyze previously collected data.