There is a very strong connection between the liver and thyroid (which conventional medicine completely ignores). I seriously believe that your thyroid problems can be helped/cured with a series of liver flushes.
I don't believe that Liver Flushing is a cure-all. But it can certainly help thyroid problems greatly. Also give up all polyunsaturated oils (unless they are cold pressed and unrefined). This will be a big help to your thyroid.