Everything You Need To Know About Your Thyroid During Pregnancy


Thyroid is an organ that controls hormone production in response to internal and external stimuli thereby affecting almost every organ of our body. The thyroid hormones are responsible for regulating metabolism, heart, nervous system, weight, body temperature and many more processes that take place in the body.


During pregnancy, thyroid gland plays a very important role both in the health of the mother and the development of the baby.


A Pre-existing hyperthyroidism or hypothyroidism could mean that extra medical assistance and care during pregnancy. But pregnancy is also known to cause symptoms that similar to a thyroid disease. So it’s important to find out from your doctor if you have thyroid problems or the symptoms are just from pregnancy.




This is generally caused by Graves’ disease which is an auto-immune disorder in which the immune system attacks the body’s own cells and organs instead of foreign bacteria and viruses. A few symptoms of hyperthyroidism during pregnancy are- Irregular heartbeat, Nausea or vomiting, Trouble getting sleep, Weight loss or abnormally low weight gain during pregnancy, Tremors and nervousness.


Unmonitored hyperthyroidism could lead to miscarriage, premature birth, low birth weight, heart failure and preeclampsia (rise in blood pressure)..




Hypothyroidism in pregnancy is due to Hashimoto's disease which results in chronic inflammation of the thyroid gland. It can also be as a result of the previous removal of the thyroid as a treatment for hyperthyroidism. These are the common symptoms of hypothyroidism during pregnancy- Extreme tiredness, Sensitive to extreme temperatures especially cold, Constipation, Muscle cramps, Memory problems..




For hyperthyroidism, antithyroid medications are recommended that will decrease the production of thyroid hormone. In cases, where women don’t respond to this medication or have side effects because of it, a part of the thyroid gland may be removed.


Hypothyroidism is treated with a hormone called levothyroxine which is similar to hormone T4. The dosage will depend on the amount of TSH levels. If you are already taking levothyroxine then it’s;important to tell your doctor about it when you get pregnant because the dosage requirements will vary.


Despite everything most women with thyroid problems still have healthy pregnancies by taking the required medicine and keeping a check on the hormonal changes.


Disclaimer: The information in the article is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of your doctor.



Also read: Are scans and vitamins really needed during pregnancy?

Explore the entire collection of articles: Pregnancy must know

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Comments (16)


I have hypothyroidism..doc has increased dose..

mahek akbar

I wish I knew this before

Nilofar Khan

I have hypothyroidism my dose is 25mg

Danet Pinto

Hi.. does high dose for thyroid affect the baby.. or does the thyroid medicine hv any side effects on baby???

Dr. Shilpitha Shanthappa

Danet Pinto no it dont have any such effects.. but ensure to check the thyroid levels in baby once born..

Er Angel Nandwana

hello mam, i have hypothyroidism from last 2 years.right now i am 8 week pregnant but doctor has not increased dose. i am taking 125mg. should i increase the dose or not ? please reply me.


I have Hypothyroidism

Bhagyashri Bandewar Jamkar

This is so well written.

Shalini lakhera

This is just in time

ag Ppajhh

Hi. . doc ko dhikhaya tha unhone medicine bhi di h hypothyroidism ki 100 mcg bt usse aaram nhi Mila

ag Ppajhh

Hii.. .... Bhut weaknesses rakhti h fever bhi lgta h khud ko doc ko dhikhaya usne kha nhi h roj mhsus hota h rest krne pe pasina niklta h fiver nhi lgta kya kru


Hello mam, my reports says in 8th week of pregnancy that I have 5.75 thyroid, 25mcg tab of thyroid suggested by my gyny m very worried plz suggest what things to avoid?


Hello mam, my reports says in 8th week of pregnancy that I have 5.75 thyroid, 25mcg tab of thyroid suggested by my gyny m very worried plz suggest what things to avoid?

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