Hi can anyone help? I was diagnosed with under active a while back. Started on 50mcg of levo, i never really fully understood anything about it as i was just given the medication and not really an explanation. And to be truthful i didnt always take it either. I have been taking it steady since sept this year but have had a huge amount of hair loss which im putting down to the medication. After reading some of your chats i phoned my gp this morning for my results on 10th dec they said they were normal and tsh was 1.79 does this sound about right?