I have sensory problems, cognitive deficits, and anxiety (without classic CFS symptoms) that has been more severe in the past year than usual. A friend of mine yesterday gave me a hard time when she found out I've been consuming only sea salt for years. I don't eat processed foods, so it turns out my sources of iodine intake are almost nil. Could iodine deficiency be causing all this?! Shouldn't I have a goiter and gain weight? If anything I've been losing weight.