Iodine is an element essential to the synthesis and normal function of thyroid hormones in the body.

Health considerations

Iodine deficiency is a cause of hypothyroidism, in which thyroid function is insufficient. Symptoms include fatigue, goitre, depression, weight gain, and a low basal temperature. Excessive iodine consumption is a risk factor for hyperthyroidism (overly sufficient thyroid function), typically if done quickly after a state of iodine deficiency.

Keep in mind

Households which do not use iodized table salt and/or avoid dairy and/or fish should be aware of these items’ status as a significant source of iodine.

May be found in

Iodized table salt, dairy products, sea vegetables, seaweed, eggs, white fish, shellfish, oily fish


Medline Plus
The Association of UK Dietitians

Leave a comment