In this issue of Physical Medicine and Rehabilitation Clinics, guest editor Dr. Elizabeth Bradley brings her considerable expertise to the topic of Functional Medicine. Functional medicine offers a holistic, patient-centered approach that focuses on identifying and addressing the root cause of disease. It encourages patients to take an active role in their health and physicians to look beyond the symptoms at the larger picture. In this issue, top experts provide state-of-the-art coverage of a wide variety of topics, including food sensitivities, mold and chronic diseases, frequency-specific microcurrent (FSM); community outreach and functional medicine, and more.