Can anyone comment on the effect it may have had on my body given my GP's approach to treatment. Having been diagnosed late August with autoimmune thyroiditis due to a TSH of 107 I was never given an increase in levo from 50mcg until now. This was because my GP felt that as my levels were still falling, medication should not be increased until the improvement ceased which it now has. Given everything I have read here, this should not have been left so long. Many thanks for any comments. TSH is now 17.