Common Risk Factors

- Exposure to radiation.
- Family history of thyroid cancer.
- Family history of multiple endocrine neoplasia syndromes. These are hormone-secreting tumors that may have caused chronic constipation, diarrhea, low blood sugar, nervousness or high blood pressure.
- Sex. Thyroid cancer is two to three times more common in women than men.
- Age. Papillary and follicular thyroid cancer are most common in young adults. Anaplastic thyroid cancer is more likely in older people.
In the Encyclopedia:
Thyroid biopsy Thyroid cancer
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