I’ve received several emails about using sea salt and the concern about not having enough iodine in their diet. So, I did some research and found that according to the National Institutes of Health’s Office of Dietary Supplements, studies tests have shown that most Americans who eat a varied diet get enough iodine even if they don’t use iodized salt.
Other than iodized salt, sources of iodine include fish, dairy products, grains (including bread) and fruits and vegetables. Fish get it from the ocean floor and seaweed, and plants get it from growing in soil with iodine in it. That’s why it is present in the grass that cows eat, which then shows up in cow’s milk and dairy foods. Iodine is also added to some cow feeds.
However, they do indicate that some pregnant women are at risk of low iodine levels, which potentially endanger their babies. The need for iodine increases during pregnancy, and women who do not eat dairy products or do not take the vitamin supplements that doctors typically prescribe are at risk.
Multivitamins typically contain a source of iodine like potassium iodide, when I did the math, I would have to consume a tablespoon of salt to equal the iodine in my multivitamin.
Anyone who eats seaweed — meaning almost everyone who ever eats sushi — gets plenty of iodine. The Japanese get lots of iodine, mostly from eating kelp.
So, for most of us that have replaced Iodized salt with sea salt and have a varied diet have no worries. And most iodized salt is mined and not a healthy source of salt anyway.