Goiter may not only develop following long-standing, inadequate iodine intake, but also after consuming large amounts of goitrogenic food sources that interfere with iodine uptake and or thyroid metabolism. These foods, also known as goitrogens, include Brussels sprouts, sweet potatoes, lima beans, cauliflower, rutabaga, broccoli, cabbage, cassava, and nitrate-rich food sources. In some parts of the world, there are still cases emerging where children, as a result of ingesting large amounts of goitrogenic foods, end up with mental retardation, which could have been prevented with iodine supplementation. On a similar note, regular consumption of soy products - because of their phytoestrogenic properties - can also have a significant impact on thyroid functions... Full Text