I was looking for more mention of iodized salt as well. I have Graves' Disease, an autoimmune thyroid condition that makes my throid produce too much thyroid hormone becasue it doesn't think there is any at all. The thyroid takes in iodine for use in metabolic regulation.

Basically they started adding iodine to salt when they realized that people are becoming hypothyroid (their metabolic rates were slowing and people were getting bigger) and needed more iodine. Unfortunately, that means that I need to avoid iodized salt because my body uses it to attack me (don't quote me on that, it's my own personal belief and not supported by the scientific community)

And that also means that people need to supplement their iodine so as to not get hypothyroid especially if they have any family history of thyroid problems.

It's also a good idea for all women over the age of 25 (yes, I said 25) to get their thyroid hormones checked. between 7 and 10 women get thyroid conditions versus just 1 man developing a thyroid condition.