<s>[INST] Hi Dr.,My wife is 8 week pregnant now.  Last week she had  a blood test and found her TSH was 15.  Doctor prescribed to take thyronorm 75mcg daily.  Even though she is taking the tablets regularly, we are worrying much about the babys growth, because in internet we read, TSH should be in level till 12th week of pregnancy.  Does anything harm will happen to my babys growth? [/INST] Hello, and I hope I can help you today. Low thyroid hormone levels are common in women, so thyroid disease is not unusual to see in pregnant women. It is true that the mother provides most of the thyroid hormone for the baby until late pregnancy, and profoundly low levels can cause developmental problems in the baby. However, if the level is corrected with medication, there is no reason why you and your wife cannot have a healthy baby. So I recommend your wife to follow your doctors advice and take the medication as prescribed. The level should be checked again in 3-4 weeks to see if the dosage needs to be changed. I want to reassure you that with proper medical care there is no reason your child should have any developmental problems. I hope I was able to adequately answer your question today and that my advice was helpful. Best wishes, </s>