I was interested in the talk about iodine. In some countries, iodine deficiency has been improved (solved?) through the use of iodized table salt, but they don't do it in the UK, where I live.
I do regularly eat eggs, cheese, and a little milk (in my tea), but I'm not sure that's giving me enough. White fish is meant to be a good source, but I don't eat that often enough. Thanks to @richard—I think—for mentioning seawood as another source - it seems my local supermarket stocks it, so I will have to give it a go.