The control of the thyroid hormone by the body is next described. The blood tests used for diagnosis of hypothyroidism are discussed along with the reasons the majority of hypothyroid patients are being missed when just the blood tests now in vogue are used.

Next the interrelationship with the adrenal hormones, the glucocorticoids is shown. (The glucocorticoids bring fuel to the cells, thyroid hormone regulates the rate this fuel, glucose is utilized.) After a description of the thyroid and adrenal hormones which are available either by prescription or over the counter, the book goes through all the major areas of the bodily function such as digestion, circulation and tells how inadequate thyroid function impacts each system. Major areas include thyroid's role in heart disease, diabetes, autoimmune problems, cancer and infections.