Goiters, or enlarged thyroids, may be associated with high, low, or normal thyroid levels.
Often, if the thyroid levels are normal, there is no need to do anything but keep an eye
on things. Autoimmunity
, where the immune system makes antibodies against someone's own proteins, is the cause for most thyroid problems in the US, including goiters and nodules as well as high & low thyroid levels.