what causes an enlarged thyroid
Gravesâ disease. Another condition which causes the swelling of the thyroid gland is Gravesâ disease, which is an autoimmune disease. Here, the antibodies in the immune system would stimulate the thyroid gland to overproduce hormones in the thyroid gland.
When a woman is pregnant, it is a normal that there will be a massive hormone production in the thyroid gland, causing it to swell. During pregnancy, the body produces a hormone called human chorionic gonadotropin (HCG), which causes the thyroid gland to swell.