The biopsychosocial model is an approach to medicine which stresses the importance of a holistic approach. It considers factors outside the biological process of illness when trying to understand health and disease. In this approach, a person’s social context and psychological well-being are key factors in their illness and recovery, along with their thoughts, beliefs and emotions. This title examines the concept and the utility of this approach from its history to its application, and from its philosophical underpinnings to the barriers to its implementation. It is severely critical of the failure of modern medicine to treat the patient not the disease, and its neglect of psychological and social factors in the treatment of the ill. Focusing on chronic disabling ill health, this title takes the examples of arthritis, cancer, diabetes, lower back pain, irritable bowel syndrome and depression to show how the biopsychosocial model can be used in practice. It questions why, even when the biopsychosocial approach has been proved to be more effective than traditional methods in overcoming these disorders, is not more routinely used, and how barriers to its implementation can be overcome.