Take the Holistic Approach to Your Wellness! If you are looking for a local functional medicine doctor or chiropractor, then look no further than Vitality Healthcare. Our practice in Portage, MI near Kalamazoo offers a cutting-edge approach to conventional and natural medicine. We use some of the most effective technologies and diagnostic tools available. Our approach of integrating conventional and functional medicine with the most advanced natural therapies allows us to target the underlying causes of poor health.