just had another increase of levo to 100 mcg now starting to feel better supplementing vit D, B12 etc as both very low. I have always had a temperature of around 35 as long as I can remember and never knew it was thyroid related. Anyway have started back on diet and lost 2.5lb yeah this week. Thought id take temperature to c if that had improved and it was 36.3 this is big improvementfor me, but not sure what is optimum level? Can anyone advise please.