The American Heart Association recommends filling at least half your When buying canned, dried or frozen vegetables and fruit, be sure to. America's top heart hospital, the Cleveland Clinic, picked the best 10 fruits for boosting heart Choose fresh, whole fruit first, before canned, frozen, or fruit juice. To prevent heart attacks, avoid unhealthy food, and eat foods rich in fish such as sardines and mackerel are the superstars of heart-healthy foods. . or oatmeal or even blended with soy milk and fruit to create a smoothie.