I just wanted to add since you have all expressed that you've noticed a big difference when stopping wheat and/or gluten foods as well as dairy... Did you know that our bread was once iodized but now it is brominated? Bromide like Iodine is a halogen on the periodic table, your body unfortunately is unable to tell the difference and and will absorb whatever is present. Unfortunately, bromide is harmful to the body and actually causes most if not all the symptoms you listed. Fortunately, Iodine helps your body to excrete: bromide, fluroide (yes fluoride is bad for you) chlorine, mercury, lead, arsenic, aluminum... not to mention that your body needs it for whole body health.
Bromide also is in sodas as brominated vegitable oil, here is a link (scratch that it wont let me post it, *edit*
For more information you can check out *edit* that has the most information regarding iodine and the effects of iodine deficiency.

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