20 of 22

Raspberries

These summer favorites are the main berry source of ellagitannins, a type of antioxidant that is thought to have cancer-fighting properties. They're also high in fiber (8 grams per cup), vitamin C, and vitamin K, which helps build strong bones.

Although you can buy fresh raspberries year-round, during the off-season you'll find them cheaper (and with equal nutritional value) in the frozen foods aisle. They're perfect as an addition to cereal or yogurt, or mixed into a smoothie for a quick, drink-on-the-go breakfast.

Next: Whole-wheat bread