One of the potential causes of preterm birth and low birth weight is hypothyroidism. The condition occurs when your thyroid gets under active i.e. your thyroid gland does not make enough thyroid hormone. During the first few months of pregnancy the foetus relies on the mother for thyroid hormones. These hormones play an essential part in the development of your baby's brain. Deprivation of the maternal thyroid hormone due to hypothyroidism can have irreversible effects on the foetus. In India hypothyroidism is quite prevalent in pregnant women. The occurrence of this endocrinological disorder among pregnant women in our country is