Hypothyroidism in Pregnancy - The Causes & Risk Factors

Hypothyroidism is a condition in which the thyroid gland is under active and produces very little thyroid hormones.

Hypothyroidism during pregnancy
According to statistic, approximately 2% of all pregnancies suffer from some degrees of hypothyroidism and another 2 out of 1,000 pregnancies will be complicated by clinical hypothyroidism. If you have hypothyroidism during pregnancy, you may need to have your thyroid hormone checked every 4-6 weeks, if necessary, medication is also adjusted to make sure that your thyroid within the acceptable range.
Causes and risk factors
1. Autoimmune disease
Hypothyroidism caused by autoimmune disease as a result of the cells of immune system mistakenly attacks the thyroid gland. The disease can start suddenly or over a long time including Hashimoto’s thyroiditis and atrophic thyroiditis.

2. Removal of thyroid gland
Surgical removal of the thyroid gland can cause low levels of thyroid hormones.

3. Radiation
Certain diseases including Graves’ disease, nodular goiter,or thyroid cancer are usually treated with radioactive iodine (I-131) with an aim to destroy the thyroid gland cause of diseases can lead to low levels of thyroid hormones.

4. Birth defect
Some baby was born with partly formed thyroid gland

5. Inflammation
Inflammation of thyroid gland may cause hypothyroidism.

6. Medication
Certain medication such as amiodarone, lithium, interferon alpha, can increase the risk of hypothyroidism.

7. Genetic factor
Gene passing through from one generation to generation. Sometime, it may skip.

8. Smoking
According to the World health organization, smoking is reported to be responsible for both decreasing secretion of thyroid hormone and blocking its action, thus exacerbating the symptoms of hypothyroidism.

9. Medical conditions
Medical condition such as Addison's disease, Myasthenia gravis,Polycystic ovarian syndrome,
Anorexia or bulimia are associated to the higher risk of hypothyroidism.

10. Etc.
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