Some MDs are saying that Americans have a deficiency of iodine in their diet. One article said to consume more salt for this. But they add iodine to salt. So this is like adding vitamin D to jelly beans and donuts telling people it is important to eat more donuts and jelly beans. So what does this have to do with you? Nothing just a wandering mind. Just kidding. Here is the National Library of Medicine:
Iodine: MedlinePlus Supplements It says:
The thyroid gland needs iodine to make hormones. If the thyroid doesn’t have enough iodine to do its job, feedback systems in the body cause the thyroid to work harder. This can cause an enlarged thyroid gland (goiter), which becomes evident as a swollen neck.
Other consequences of not having enough iodine (iodine deficiency) are also serious. Iodine deficiency and the resulting low levels of thyroid hormone can cause women to stop ovulating, leading to infertility. Iodine deficiency can also lead to an autoimmune disease of the thyroid and may increase the risk of getting thyroid cancer. Some researchers think that iodine deficiency might also increase the risk of other cancers such as prostate, breast, endometrial, and ovarian cancer.
Now instead of a supplement I buy nori and eat it as a snack. It is the seaweed that is used in sushi. The Japanese eat a lot of seaweed and they are the longest living people in the Milky Way galaxy. Also Whole Foods has a little bottle of granulated kelp. Kelp is a seaweed and you sprinkle it on foods. I have been doing this for over a decade. Seaweeds have lots of iodine and other trace minerals that are not in the soil that are foods are grown on.
In fact Patricia Bragg has a line of foods. One has 20 organic spices. Now she has that but also with kelp as the first ingredient. Not eating seaweed is good for the doctor's income.