Iodine is a nutrient essential for normal functioning of the thyroid gland, production of thyroid hormones and metabolism.
Iodine is typically found in small amounts in food and varies depending on environmental factors such as the soil concentration of iodine and the use of fertilizers.
Sources of dietary iodine include:
Bread (fortified)
Iodized table salt
Dairy products (e.g. cheese, cow milk, yogurt)
Eggs
Soy milk and soy sauce
Shellfish