The human body is an amazing thing and until now most of us don¿t know enough about it. The book elucidates the role of Physio/pathophysiological, risk factors, causes, diagnosis and treatment of thyroid. The thyroid gland acts as a major role in the metabolism, growth and releases hormones regulate to development of the human body. It is a butterfly-shaped organ located in the base of your neck. The thyroid gland produces thyroxine (T4) and triiodothyronine (T3) by taking up iodide from the foods and converts them into iodine to produce the thyroid hormones. This natural process-induced from the pituitary gland (TSH) which is also regulated by the hypothalamus's TSH Releasing Hormone. It is important in knowing what thyroid tests are required to diagnose its dysfunctions. If you're feeling depressed, tired or have these risk factors; Are a woman, older than 60, a family history, autoimmune disease, hypercholesterolemia, treated with radioactive iodine, received radiation to your neck and partial thyroidectomy. ¿Should be done, thyroid tests¿. There are thyroid medications and supplements to support thyroid health and how does it will be surprised to get your TSH levels normalized.