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One study showed infants born to treated hypothyroid mothers had abnormal thyroid function compared to matched controls. [2] Therefore, it is advised to monitor T4 levels throughout the pregnancy in case treatment dosages should be increased to accommodate both the mother’s and fetus’s thyroid hormone requirements.
Hypothyroidism is common in pregnancy with an estimated prevalence of 2-3% and 0.3-0.5% for subclinical and overt hypothyroidism respectively. [8] Endemic iodine deficiency accounts for most hypothyroidism in pregnant women worldwide while chronic autoimmune thyroiditis is the most common cause of hypothyroidism in iodine sufficient parts of the world.
Postpartum thyroiditis refers to thyroid dysfunction occurring in the first 12 months after pregnancy [1] and may involve hyperthyroidism, hypothyroidism or the two sequentially. According to the National Institute of Health, postpartum thyroiditis affects about 8% of pregnancies. [ 2 ]
Hypothyroidism (also called underactive thyroid, low thyroid or hypothyreosis) is a disorder of the endocrine system in which the thyroid gland does not produce enough thyroid hormones. [3] It can cause a number of symptoms, such as poor ability to tolerate cold , extreme fatigue, muscle aches , constipation , slow heart rate , depression , and ...
Symptoms of normal pregnancy, like fatigue, can make it easy to overlook thyroid problems in pregnancy. [1] Thyroid hormone is vital during pregnancy. The unborn baby's brain and nervous system need thyroid hormone to develop. During the first trimester, the baby depends on the mother's supply of thyroid hormone. At 10 to 12 weeks of pregnancy ...
Certain medications can have the unintended side effect of affecting thyroid function. While some medications can lead to significant hypothyroidism or hyperthyroidism and those at risk will need to be carefully monitored, some medications may affect thyroid hormone lab tests without causing any symptoms or clinical changes, and may not require treatment.
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In up to 50% of females with thyroid peroxidase antibodies in the early pregnancy, thyroid autoimmunity in the postpartum period exacerbates in the form of postpartum thyroiditis. [137] Higher secretion of IFN-γ and IL-4 , and lower plasma cortisol concentration during pregnancy has been reported in females with postpartum thyroiditis than in ...