Potassium iodide is a salt with a similar makeup to table salt. In fact, it's the same form of iodine used in table salt. According to Medicine Net, it's used in preparation for thyroid surgery, to combat high thyroid levels and to loosen mucus in the respiratory system. The recommended daily intake of iodine is 150 micrograms for men, 120 for women, 70 to 150 for children and 50 to 60 for infants, according to the Healthy Eating Club. Potassium iodide is usually found in pill and droplet form, but there are a variety of of foods that contain an abundant source of natural iodine.
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Kelp, also known as the sea vegetable, is one of the richest known sources of iodine. According to the World's Healthiest Foods, 1/4 cup of kelp has only 9 calories and 276.7 percent of your daily iodine needs.
Low-fat yogurt is another plentiful source of iodine. The World's Healthiest Foods says that on average, it contains 155 calories per cup and has 51.8 percent of your daily iodine needs, along with vitamins D and C. To fulfill your daily iodine needs through low-fat yogurt, eat two cups per day.
2 Percent Cow's Milk
The World's Healthiest Foods says 2 percent cow's milk is the third-richest source of iodine. One cup contains 39 percent of your daily iodine needs and only 121 calories. To meet your daily iodine needs with milk, drink 2.5 cups per day.