People with Grave's Disease and Hyperthyroidism have to be careful when it comes to consuming foods high in iodine. Many people make the mistake of thinking cutting out iodine in your diet means cutting back on salt or sodium. But low iodine ≠ low sodium. Foods high in sodium may be low in iodine. Foods high in iodine may be low in sodium.
The confusion with salt has to do with whether or not it is iodized (iodide added) or non-iodized. Iodide was added to salt because some people don't get enough in their normal diet. For some people a deficiency of iodine may cause goiter and other health issues. But because I have Grave's Disease, I made the switch to non-iodized salt. That way, when I need to use salt, which isn't very often to begin with, I can without having to worry about consuming excess iodine.
All of my local grocery stores carry non-iodized salt. The one I purchased even specifies on the label "this salt does not supply iodide, a necessary nutrient." That's ok with me. For those of you with Grave's Disease, I encourage you to look for non-iodized salt the next time you shop for groceries.