When someone has a goiter, it typically means their thyroid gland is enlarged due to overactivity or underactivity. Thyroid hormone replacement therapy is often used to treat an underactive thyroid (hypothyroidism) by increasing levels of thyroid hormones in the body. By doing so, the body no longer needs to produce as much thyroid hormone itself, which can help reduce the size of the goiter and slow its growth. Additionally, thyroid hormone replacement therapy can help regulate thyroid function, which may also contribute to a reduction in the size of the goiter over time.
