Meaning of Low TSH Levels

 

The meaning of low TSH levels needs to be understood as this is a measure of the function of thyroid gland. In order to understand the connection between TSH levels and thyroid function, you need to know the basic definition of TSH. TSH, or thyroid stimulating hormone, is secreted by the pituitary gland for activating the thyroid gland. Based on this activation, the thyroid gland releases its hormone in defined quantities. The hormone quantity is generally defined by the TSH levels in the blood. Whenever there is an abnormal TSH level, like high or low TSH levels, it is clear that the function of thyroid gland is not proper.

 

Impact of a Low TSH Level

 

In order to understand the importance of thyroid stimulating hormone, we are going to take a look at the impact of a low TSH level on the functioning of thyroid gland. Due to low TSH levels, the thyroid hormone is not entirely activated. It is instructed to secrete a low amount of thyroid hormone as there is excessive thyroid hormone present in the blood already. Since the TSH levels are determined by gauging the amount of thyroid hormones in blood, low TSH levels mean that there is excessive thyroid hormone flowing in the blood stream. Due to this, the pituitary gland maintains a low TSH level so as to bring down the thyroid hormone level to normal. Persistent low TSH levels can be translated into major impact on the functioning of the body. Usually, persistent low TSH levels point towards the condition of hyperthyroidism. (more…)