Effects On Thyroid Postpartum

Effects On Thyroid Postpartum

21 Feb 2018 | 2 min Read

Dr Shilpitha Shanthappa

Author | 15 Articles



The effects depends on the type of thyroid condition  you have. Common thyroid conditions are hyperthyroidism, hypothyroidism and postpartum thyroiditis. It also depends on whether the condition is an auto-immune condition, or has other causes, such as iodine deficiency.




Most often, women with hypothyroidism, who may have needed higher levels of medication (levothyroxine) during;pregnancy, go back to pre-pregnancy thyroid levels after their baby is born.;However, about 50 percent of women with a particular form of hypothyroidism known as Hashimoto’s thyroiditis, may find that they need a higher dose of medication after their baby is born. Hashimoto’s thyroiditis is caused by an auto-immune condition in which the thyroid gland attacks itself. This auto-immune condition typically flares up during the postnatal period.




Hyperthyroidism is thought to affect 2 in 1000 women during pregnancy. The most common cause of hyperthyroidism is an auto-immune condition called Graves’ disease.;Women who had mild hyperthyroidism before becoming pregnant may find that pregnancy makes their;symptoms;temporarily better, especially during the second and third trimesters.;This is because pregnancy itself can suppress the action of the thyroid gland. Some women with mild hyperthyroidism may therefore be able to stop medication in the;third trimester, but their symptoms may come back shortly after giving birth.

Does Thyroid Medicines Affect Lactation?


Taking thyroid medication does not affect your milk supply. On the contrary, not taking enough medication might affect the supply..

However, both hypo and hyper thyroid conditions can affect the way in which;breastmilk;is released. According to a study, increased concentrations of the hormone FIL (feedback inhibitor of lactation), decrease milk production in women with thyroid problems.;

Massaging breasts in a downward motion towards the nipple increase the milk supply..


Does Thyroid Medicines Pass Through Breastmilk?

  1. Medicines used to treat hypothyroidism passes in very little amount
  2. Where as medicines used to treat hyperthyroidism passes in large amount.

Hence, regular check on the thyroid levels are done for babies as well.


Also Read – Vaginal Discharges – The Body’s Defensive Mechanism

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