3 doctors weighed in:
Anybody know about hypothyroidism cause?
3 doctors weighed in

Dr. Richard Shewbridge
Internal Medicine - Endocrinology
2 doctors agree
In brief: A few good reasons!
The number one reason someone's thyroid gland becomes underactive is that the immune system is attacking it (autoimmune thyroiditis, or hashimoto thyroiditis).
Why this attack occurs is unknown. Other common reasons are that the thyroid gland has been surgically removed or subjected to radioiodine treatment to correct an overactive gland.

In brief: A few good reasons!
The number one reason someone's thyroid gland becomes underactive is that the immune system is attacking it (autoimmune thyroiditis, or hashimoto thyroiditis).
Why this attack occurs is unknown. Other common reasons are that the thyroid gland has been surgically removed or subjected to radioiodine treatment to correct an overactive gland.
Dr. Richard Shewbridge
Dr. Richard Shewbridge
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