Soy products, wine, citrus fruits, and tea are great sources of flavonoids. They're big in the health world because they're believed to help lower cholesterol, prevent cataracts, and have anti-cancer abilities. Catechins have been linked to a reduced risk of stroke, heart failure, cancer, and diabetes. When combined with regular exercise, catechins have also been shown to delay some forms of aging. This healthy compound can be found in green tea, black tea, Oolong tea, beans, grapes, apricots, apples, red wine, and chocolate. So be sure to include these in your diet. And don't forget to exercise, either.