The investigators have already proven that absolute total thyroidectomy gives elimination of anti-TPO antibodies. Our hypothesis is that this elimination also eliminates the typical Hashimoto symptoms, namely: Serious tiredness, increased need of sleep, pain in musculature and joints and dryness in eyes and mouth. The prerequisite for this effect is the absolute total thyroidectomy. There exists no other treatment that can eliminate the antibodies. The study is randomized between operation and ordinary conservative medical treatment with thyroxine control and supplementation. The symptoms in both groups are evaluated by 5 different Quality of Life schemes, internationally approved.