Iodine is an essential mineral, meaning that our bodies need it to function properly. Our bodies cannot produce iodine on their own, so it must be ingested either through your diet or as a supplement. After it’s absorbed in the stomach and small intestine, it travels through the bloodstream to iodine receptors (located in the thyroid), which bind to and absorb it.

Our bodies only need a small amount of iodine, so we can typically get it through our food.

But why is iodine important for my child?

Iodine plays an important role in the thyroid glands and the production of thyroid hormones – thyroxine (T4) and triiodothyronine (T3). It is these hormones that help our bodies regulate energy levels, weight gain, and internal temperature while also affecting hair, skin, and nail growth. Without the necessary amounts of iodine, a child’s growth and development might be impaired. This can lead to the following symptoms:

Constipation

Lethargy

Growth stunting

Weight gain

Learning and memory problems

Feeling very cold

So, how much iodine is enough for your child, and how can you make sure they’re getting it?

How much iodine does my child need?

Although iodine is essential for your toddler, only a small amount is needed per day. Recommended iodine in 1-3 year olds is 70 mg/day.

Can too much iodine be harmful?

Yes! Having too much iodine can be harmful for your little one and cause thyroid problems, so it is important not to supplement this unless your toddler is unlikely to be meeting their needs through their diet.

Foods Containing Iodine

Iodine can be found in lots of foods. Some common ones are listed below:

Yoghurt

Cheese

Haddock

Salmon

Eggs

If you are concerned your little one isn't eating most of the foods from the above list it may be worth discussing this with your health care professional to see if supplementation is needed.

What is iodine, and how much does my toddler need?

Part of Unii’s Toddler Nutrition Journey, we look at how much iodine your child needs.