What is cholesterol and how is it related to my thyroid gland?
Cholesterol is a particular type of fat in the blood and is partially influenced by the amount of thyroid hormones secreted by the thyroid gland. If a person has an underactive thyroid then the cholesterol may be higher than normal. Once the thyroid disorder is treated and maintained within the reference range the cholesterol levels should go back to their previous levels. An increase in blood pressure may also be found in people with an untreated underactive thyroid disorder.