Why Do I Still Have Thyroid Symptoms? When My Lab Tests Are Normal Why Do I Still Have Thyroid Symptoms? was written to address the true causes of hypothyroidism in this country and how to manage them. The vast majority of hypothyroid cases are caused by Hashimoto's disease, an autoimmune reaction, and are being treated inappropriately or misdiagnosed by the standard health care model. Through exhaustive research and clinical experience, Dr. Kharrazian has discovered the many causes of hypothyroidism, including autoimmunity, and how to manage it.