After trials showed that supplements of iodine could prevent goitre, iodised salt was rolled out commercially in 1924, starting in grocery stores in Michigan. By the 1940s, the goitre belt had ...

Excess iodine exposure or ingestion can result in thyroid dysfunction in certain susceptible individuals, but is generally well-tolerated in most people Iodine-induced thyroid dysfunction might be ...

Margaret Rayman, professor of nutritional medicine at Surrey University, explores why iodine is essential for our health. Show more The phrase 'essential 'element' is often incorrectly used to ...