The Institute for Functional Medicine defines functional medicine as a systems biology-based approach that focuses on identifying and addressing the root cause of disease. Each symptom or differential diagnosis may be one of many contributing to an individual’s illness. Functional medicine is an approach that focuses on the optimal function of the body. This means helping the body function in the best way possible by focusing on efficiency in each organ. We can state that Functional Medicine is a proactive approach to treatment by addressing patients’ lifestyle habits and allowing positive changes here affect their illness and issues. For instance, a functional medicine practitioner discusses diet, exercise, and lifestyle alterations at the first consultation instead of waiting for the atherosclerotic plaques to line arterial walls. Applying the above example to functional medicine, addressing a patient’s nutrition can lead to a better and more well-rounded understanding of possible diseases and prevent them from occurring. As it is evident, by providing an efficient and high-quality health system for preventing diseases, we will have a healthier society.