Eating This High-Protein, High-Fiber Food Every Day Could Add 4 Years to Your Life

According to Blue Zones founder Dan Buettner, beans and longevity go hand-in-hand. Here's how much to eat every day in order to add *years* to your life.

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Photo: <a href="http://www.stocksy.com" target="_blank" rel="noopener noreferrer">Stocksy</a>/Cameron Whitman