You can't get fit until you get healthy.  Functional Medicine focuses on interactions between the environment and the gastrointestinal, endocrine, and immune systems.  It addresses the underlying causes of disease, using a personalized systems-oriented model allowing patients and practitioners to achieve the highest level of success by working in collaboration to address the underlying causes of disease.  Functional Medicine utilizes the latest in diagnostics, genetic science, systems biology, and an understanding of environmental and lifestyle factors which influence the emergence and progression of disease.