Hypothyroidism (Underactive Thyroid) During Pregnancy: Effects on Fetal Development and Treatment

Question

What factors might lead to fetal deformities or intellectual disability during pregnancy with hypothyroidism (underactive thyroid)?

Answer

Treatment for hypothyroidism generally includes iron supplements, vitamin B12, and folic acid (vitamin B9) to improve symptoms of lack of appetite. Patients may also need to undergo replacement therapy, such as levothyroxine (L-T4 or levothyroxine sodium tablets) or dried thyroid, with the dosage adjusted based on the results of thyroid function tests conducted two to three months later, in order to maintain a long-term stable treatment effect.