Is there any relationship between soyfood consumption and thyroid function or the development of goiter?
A recent review of human health research found that soy users who had ample iodine in their diet were not at increased risk for thyroid problems or goiter. In fact, the findings of a recent human study suggest that consumption of both traditional and modern soyfoods is associated with a reduced risk of thyroid cancer. There is a chance that soy, other high-fiber foods, and certain dietary supplements may interfere with medication for hypothyroidism. Individuals treated for hypothyroidism can consume soyfoods safely, but should discuss their diets with their physician. (57 – 58) Reports of goiter and hypothyroidism in human infants fed soy-flour based formulas in the 1960s predate the supplementation of soy protein based formulas with iodine. Today, the American Academy of Pediatrics recognizes iodine fortified soy-based infant formula as a safe and effective alternative for infants allergic to cow’s milk to provide appropriate nutrition for normal growth and development. (59) Learn mor
