Spondyloarthritis (SpA) is a group of chronic inflammatory diseases affecting the spine and peripheral joints, causing pain, stiffness, and reduced mobility. This narrative review examines how lifestyle factors—specifically smoking, alcohol consumption, and unhealthy diet—contribute to the onset and progression of SpA. It highlights their impact on disease activity, comorbidities, radiographic damage, and treatment response. Therefore, healthcare providers are encouraged to support patients in making personalized lifestyle changes. These findings underscore the importance of a comprehensive approach to SpA management, integrating lifestyle modifications with conventional therapies for optimal disease control and improved outcomes.