What Happens if Thyroid Level is High During Pregnancy?
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Two pregnancy-related hormones—human chorionic gonadotropin (hCG) and estrogen—cause higher measured thyroid hormone levels in your blood. The thyroid enlarges slightly in healthy women during pregnancy, but usually not enough for a health care professional to feel during a physical exam. Thyroid problems can be hard to diagnose in pregnancy due to higher levels of thyroid.
Thyroid function tests change during normal pregnancy due to the influence of two main hormones: human chorionic gonadotropin (hCG) and estrogen. Because hCG can weakly stimulate the thyroid, the high circulating hCG levels in the first trimester may result in a low TSH that returns to normal throughout the duration of pregnancy. Estrogen increases the amount of thyroid hormone.
You find out you’re pregnant and find out your TSH is 5.0. Your doctor starts you on 50mcg of levothyroxine thyroid medication and your TSH lowers to 2.6. 2.6 is outside of the recommended range of 0.1 to 2.5 which means your thyroid is not optimized.
Your doctor then increases your dose to 75mcg of levothyroxine and rechecks your TSH. Low thyroid levels during pregnancy, for example, can be caused by high levels of hCG. When this hormone is present, the result will be lower TSH levels, which can lead to hyperthyroidism. And the opposite can happen due to estrogen, resulting in the thyroid underperforming and causing you to gain weight (outside of normal pregnancy weight). When you’re pregnant, your body is constantly evolving—your belly is growing, your hormones are changing, and sometimes your thyroid goes haywire.
Because of these changes, pregnancy can trigger a thyroid problem. You may be more susceptible to a thyroid condition during pregnancy for genetic reasons, from pre-existing hypothyroidism that hasn’t been treated properly, or from previous damage. Hypothyroidism is one of several thyroid diseases in which the thyroid gland doesn’t make enough thyroid hormone so levels of the hormone levels become low.
When thyroid hormone levels are too low, it causes symptoms like tremors, weight loss and frequent bowel movements. Severe, untreated hypothyroidism during pregnancy may cause complications that affect the baby and lead to delayed development. In the first trimester, hCG — which is similar to TSH — stimulates production of thyroid hormones. And throughout pregnancy, increased estrogen levels produce a hormone that helps transports thyroid hormones in the blood.
By the third trimester, the thyroid’s volume may be 10-15 percent greater. All of this is normal. Thyroid function tests change during pregnancy due to the influence of two main hormones: human chorionic gonadotropin (hCG), the hormone that is measured in the pregnancy test and estrogen, the main female hormone. HCG can weakly turn on the thyroid and the high circulating hCG levels in the first trimester may result in a slightly low TSH. The thyroid makes hormones that help your body work.
If it makes too little or too much of these hormones, you may have problems during pregnancy. Untreated thyroid conditions during pregnancy are linked to serious problems, including premature birth, miscarriage and stillbirth. If you’re pregnant and already taking this medication for abnormal thyroid hormone levels, your doctor may recommend increasing your dose by about 30 to.
List of related literature:
|from The Brigham Intensive Review of Internal Medicine E-Book|
|from Creasy and Resnik’s Maternal-Fetal Medicine: Principles and Practice E-Book|
|from Treatment of Infertility with Chinese Medicine E-Book|
|from Primary Care E-Book: A Collaborative Practice|
|from Creasy and Resnik’s Maternal-Fetal Medicine: Principles and Practice|
|from Swanson’s Family Medicine Review|
|from Swanson’s Family Medicine Review E-Book|
|from Brighton Baby: a Revolutionary Organic Approach to Having an Extraordinary Child: The Complete Guide to Preconception & Conception|
|from Obstetrics: Normal and Problem Pregnancies E-Book|
|from Surgery of the Thyroid and Parathyroid Glands E-Book: Expert Consult Premium Edition Enhanced Online Features|