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8. Watercress

Watercress is a leafy salad vegetable loaded with potent phytochemicals. It is the richest known source of phenylethyl isothiocyanate, which is responsible for the characteristic peppery flavor and anti-cancer properties in the veggie. Iodine ranks high among the health-enhancing treasures in this food. Three ounces of watercress -- enough to fill a cereal bowl -- provides 10 percent DV of iodine.

watercress sources of iodine Juanmonino / Getty Images

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This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.