Here's what you should be looking for—and exactly how to buy the best—when you're shopping for summer vegetables.
  1. Arugula
    Salad greens arugula
    The Payoff: Vitamin K, which may improve insulin sensitivity, offering protection against diabetes.
  2. Beets
    Beets 10 brainpower boosting secrets
    The Payoff: Nitrate, which may help lower blood pressure.
  3. Bell Peppers
    Red bell peppers
    The Payoff: All bell peppers are loaded with antioxidants, especially vitamin C. Red peppers lead the pack, with nearly three times the amount of vitamin C found in oranges.
  4. Eggplant
    The Payoff: Chlorogenic acid, a phenol antioxidant that scavenges disease-fighting free radicals.
  5. Green Beans
    Green beans
    The Payoff: Fiber (4 grams in 1 cup), which can reduce all-cause mortality, according to Dutch researchers.
  6. Tomatoes
    Heirloom tomatoes
    The Payoff: Lycopene, a carotenoid antioxidant that helps fend off prostate cancer.
  7. Zucchini
    The Payoff: Riboflavin, a B vitamin needed for red blood cell production and for converting carbohydrates to energy.