Kathryn R. Simpson, MS, was an executive in the biotech industry when she was diagnosed with multiple sclerosis. Upon discovering that her symptoms were caused by multiple hormonal deficiencies, Simpson began conducting endocrine research. She discovered that resolving these hormonal deficiencies led to a complete resolution of all her symptoms. Now, Simpson is founder and director of The Hormone Resource Center, a specialty hormone clinic that treats hormone imbalance and diseases such as multiple sclerosis, lupus, and fibromyalgia. She is author of The Perimenopause and Menopause Workbook and The MS Solution.