Plus, when fruit is in a liquid form, we can eat a whole lot more of it. . When I started the heart health diet I simply assumed that fruits in quantity were great – but. You've been told since you were a kid how important it is to eat fruit. But is there such thing as too much? As a nutritionist, I've worked with. The vitamins, minerals and antioxidants in fruit may help keep your heart healthy so you can reduce your risk of problems as you get older. Walter Willett reports.