When hormones associated with good health maintenance and vitality decline with age, the condition is no different than a hormonal imbalance at any age. Intensive research in the fields of endocrinology and immunology have opened up a window on why we age and how the process comes about. Hormones are key to this progression. They are communicators between the nervous, endocrine and immune systems and help these systems adapt to environments, control emotions, manage organ and central nervous system functions and correct abnormalities so that your body is balanced hormonally. Good hormone balance is critical to your overall health and, just as importantly, to the successful outcome of any physical therapy you undergo.