Information and support I am Living with a thyroid condition Pregnancy Pregnancy and thyroid disorders An undiagnosed or uncontrolled thyroid condition can make it harder to get pregnant. It can also increase the risk of miscarriage and harm the developing baby. However, with appropriate management and regular monitoring of thyroid levels, most women can go on to have a successful pregnancy and a healthy baby. It is therefore vital that women are given information and support to reduce these risks and improve outcomes. To help women access the best care before, during and after pregnancy, the Royal College of Obstetricians and Gynaecologists (RCOG) published its 2025 Green-top guideline on the Management of Thyroid Disorders in Pregnancy. This is a summary of the key recommendations. Please discuss these with your healthcare practitioner if you are planning to become pregnant, are pregnant, or have recently given birth. Managing overt hypothyroidism Managing subclinical hypothyroidism Managing hyperthyroidism Positive antibodies but normal thyroid function Women at risk of developing abnormal thyroid function in pregnancy Gestational transient thyrotoxicosis Postpartum thyroiditis Managing thyroid nodules and/or thyroid cancer in pregnancy Iodine intake in conception and pregnancy Pregnancy and thyroid disorders alert card Read our guide to pregnancy and fertility in thyroid disorders Thyroid disorders in pregnancy article Thyroid and pregnancy FAQs Breastfeeding and thyroid disease Watch more BTF videos on thyroid disease and pregnancy Read our pregnancy webinar Q&As Watch animations on thyroid disease and pregnancy These animations are sharing with kind permission of the DEVI Collaboration Information for healthcare professionals Royal College of Obstetricians and Gynaecologists (RCOG) Green-top Guideline No. 76 Management of Thyroid Disorders in Pregnancy May 2025 Please help us help others With your support, we can help people to live better with thyroid disease. Your donations also fund vital research to improve treatments. Please consider making a donation or becoming a member Please select a donation amount (required) £5 £10 £25 £35 Other Set up a regular payment Donate Become a BTF member Manage Cookie Preferences Please ensure Javascript is enabled for purposes of website accessibility