Q:
What are the causes of hypothyroidism?
A:
Hypothyroidism results when the thyroid gland fails to produce enough hormones.
Hypothyroidism may be due to a number of factors, including:
- Autoimmune disease
- Treatment for hyperthyroidism
- Thyroid surgery
- Radiation therapy
- Medications
Less often, hypothyroidism may result from one of the following:
- Congenital disease
- Pituitary disorder
- Pregnancy
- Iodine deficiency
Although anyone can develop hypothyroidism, you’re at an increased risk if you:
- Are a woman older than age 60
- Have an autoimmune disease
- Have a family history of thyroid disease
- Have other autoimmune diseases, such as rheumatoid arthritis or lupus, a chronic inflammatory condition
- Have been treated with radioactive iodine or anti-thyroid medications
- Received radiation to your neck or upper chest
- Have had thyroid surgery (partial thyroidectomy)
- Have been pregnant or delivered a baby within the past six months
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