An 8-ounce cup of V8 may contain 80% of your vitamin C intake, but it’s got just 2 grams of fiber or 7% of recommended daily intake. V8’s High-Fiber 100% Vegetable Juice has 6 grams of fiber.

The blue zones diet is based on the eating habits of some of the world's longest-lived people. This comprehensive list of foods to eat and 7-day meal plan can get you started.