I am starting to see a lot of new research on iodine. This is in some ways due to people trying to change their eating habits for the better. As many people remove salt from their diet, they also remove iodine. Seafood is another good source of iodine, but some people don't consume that.
I think what is happening with iodine parallels what happened with Vitamin D. Enough evidence built up and now many people supplement with this basic nutrient. I wouldn't be surprised if iodine is a commonly used supplement in 5 years time.
For example, this new study shows that correcting mild iodine deficiency in children boosts cognitive performance. This study shows that iodine improves the lipid profile in children.
You can get iodine from natural sources such as sea vegetables (especially kelp). However, a new study showed that many kelp supplements contained high levels of arsenic. Therefore, it could be safer just to get iodine through supplement form.
