Research shows too little salt may increase thyroid disruption
Recent research has suggested that consuming too much salt may increase the risk of heart disease. However, because table salt is fortified with iodine, it can help ward off thyroid problems in adults and developmental delays in children, The Star
As public-health campaigns urge people to consume less salt, Health Canada will evaluate the role of iodized salt in maintaining healthy iodine levels. Although table salt represents only about 11 per cent of Canadians' daily sodium intake, it provides roughly half the .15 mg of iodine adults need each day.
A few recent studies have looked at sodium and iodine, including one in the American Journal of Hypertension
that found dietary salt restriction to be associated with iodine deficiency in women.
"Because we're focusing our efforts on lowering sodium, it's an obvious question to start looking at," Mary L'Abbé, a professor at the University of Toronto and vice-chair of Health Canada's Sodium Working Group, told the news source.
According to the Centers for Disease Control and Prevention, some types of thyroid cancers are more common in areas of the world where diets are low in iodine.