If you have an ordinary goitre, your thyroid gland will still operate normally, but is enlarged so it can be seen and palpable as a bump at the front of the neck. Some causes or ordinary goitre are too rare and, therefore, will not be mentioned here. The most common cause is the lack of iodine in the diet. If the body does not have enough iodine, the thyroid gland can not secrete sufficient amounts of thyroxine; in this case, pituitary “discovers” a low level of thyroxine in the blood, and is trying to increase it by secreting larger amount of TSH hormone (a hormone that stimulates the thyroid gland).
A larger quantity of pituitary hormone stimulates the growth of the thyroid, which in vain tries to secrete more thyroxin. If you notice the swelling at the front of the neck, see your physician. You will need to give blood for tests, and maybe go to the hospital for some other tests to rule out other disorders of the thyroid. However, if the diagnosis is “simple goitre”, treatment is simple. Eat more iodine – in fish, fish products and sea salt.