Pomegranates contain numerous antioxidants, including heart-promoting polyphenols and anthocyanins which may help stave off hardening of the arteries. One study of heart disease patients found that a daily dose of pomegranate juice over three months showed improvements in blood flow to the heart. Ultimately, though, it's important to have variety in your diet. If you don't like pomegranates or can't afford them, reach for apples, which also contain plenty of health-promoting compounds, says Graf.