Leafy Greens

 

Kale has been a smash hit among health-conscious buyers in recent years, but Swiss chard, mustard greens, collard greens, and spinach are other options that pack the same perks. In addition to being a cancer-fighting food, they help reduce risk of hypertension since they're so high in calcium and potassium. Leafy greens are also iron-rich -- a must-have for athletes and pregnant women. You'll find them at their peak season in late summer and early fall, but use them all year round in omelets, salads, soups, and more to eat you way to a smaller size. "Counter the bitterness of chard or mustard with sweet potatoes and cranberries," suggests London. "Saltier and tangier flavors tend to enhance the flavor of these greens, so think about making your own dressings like olive oil, lemon juice, or cayenne pepper