Creamy, succulent avocados not only contain the best kind of fat (monounsaturated oleic acid) but also help your body block the absorption of bad fats (cholesterol). They're high in lutein, which aids eyesight, and in potassium and folate, which may reduce the risk of stroke and cardiovascular disease. And they're low in pesticides.
The same key nutrients that give high-priced health foods their disease-fighting powers can be found in more common fruits and veggies. Here's where to look.