Before the discovery of the human genome, scientists believed that virtually all questions regarding the causes of disease would be resolved. However, our functional medicine doctor at Index Clinic discovered that human biology is far more complex than that. Humans are not genetically predisposed to many diseases; rather, various factors, including stress, environment, lifestyle, diet, exercise patterns, and psychosocial-spiritual factors, affect how genes are expressed. Our Functional Medicine concept is a personalised, patient-centered, scientific approach that enables patients and healthcare professionals to collaborate in order to treat the underlying causes of disease and promote optimal functional nutritionist health. It necessitates a comprehensive understanding of each patient’s genetic, biochemical, and lifestyle characteristics and employs this knowledge to guide individualised treatment strategies that improve patient outcomes.