3. Greens

Some research suggests free radicals, the byproducts of physiological processes, play a major role in the development of RA. Dark green leafy vegetables provide generous servings of antioxidants to help protect cells from damaging free radicals. Greens also contain a rich supply of calcium to strengthen bones. Kale, Swiss chard, collards, and spinach carry copious nutrients that strengthen the immune system, bones, and blood as well.

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