Iodine Explained

What is it?
Iodine is a trace element that occurs naturally in the ocean and soil and is critical in our diets. A study released in October showed 43% of Australians have an inadequate intake of iodine. To address this, the government has announced the mandatory iodine fortification of bread from September 2009.

What does it do?
Iodine enables the thyroid gland to manufacture thyroxine, a vitally important hormone that regulates metabolism in the body’s cells. It also promotes growth and development - including that of the brain - in foetuses and children.

Do I need a supplement now?
Most of us should be able to get a sufficient dietary intake of iodine by swapping non-iodised salt for iodised salt and by eating a variety of seafood, eggs and dairy products. People who don’t eat animal products or who are on low-salt diets may need a supplement, but check with your doctor first. The Australian Thyroid Foundation (ATF) recommends prepregnant, pregnant and breastfeeding women take a daily pregnancy supplement that includes 250mcg of iodine. “Fifty per cent of pregnant women are iodine deficient,” says Beverley Garside, president of the ATF.