Hypothyroidism: Causes, Diagnosis and Therapies

Thyroid hormones released by the thyroid gland are responsible for the body's usage of energy. Without sufficient hormone, the body cannot function normally. Hypothyroidism, also called underactive thyroid is a common condition wherein the thyroid gland does not produce sufficient quantity of thyroid hormone, making the metabolism slow down. It is a common condition, specifically in women above the age of sixty. If left untreated, hypothyroidism may lead to issues like high cholesterol and heart problems. There are several causes of hypothyroidism including Hashimoto's disease, thyroiditis, congenital hypothyroidism, surgical removal of part or all of the thyroid, radiation treatment of the thyroid, certain medicines, and pituitary disease. Major symptoms of an underactive thyroid gland include anemia, confusion, weight gain, tiredness, and feeling cold. The presence of hypothyroidism can be diagnosed with the help of an examination of patient's medical history, physical examination, and blood tests like TSH, T3, T4, and thyroid antibody blood tests. Additionally, it can also be diagnosed using imaging tests such as a thyroid scan, ultrasound, or radioactive iodine uptake test. Hormone replacement therapy is the only treatment available for hypothyroidism. This book presents researches and studies performed by experts across the globe. It will help the readers in keeping pace with the rapid changes in this field.