Written in easy-to-understand language, the book begins by explaining how important the thyroid is in regulating the body's metabolism, which, in turn, plays a vital role in controlling the functions of the heart, brain, liver, lungs, kidneys, and intestines. It then goes on to discuss the most common thyroid-related disorders and symptoms, including hypothyroidism, hyperthyroidism, autoimmune dysfunction, celiac disease, thyroid cancer, mood swings, and excess weight gain. Each discussion begins with an overview of the disorder that helps readers determine if they may be suffering from the problem. It then explains the disorder's cause and common symptoms; diagnostic tests; and both conventional and alternative treatment approaches. Included is a handy resource section that points the way to further information and support.