The Obesity Podcast Ep. 4: The Evolution of the Swedish Obese Subjects (SOS) Study

Professor Lena Carlsson Ekander recounts the origins and evolution of the Swedish Obese Subjects (SOS) Study – the world’s longest prospective investigation into the effects of intentional weight loss on survival and metabolic health. She reflects on the vision of the study’s founder, Prof. Lars Sjöström, and how the team built a nationwide cohort across 25 hospitals and 480 primary-care centres. The discussion covers the scientific rationale, ethics of non-randomisation, landmark outcomes (increased life expectancy, cancer and diabetes reduction), and important safety insights such as fracture risk and alcohol-related mortality. The conversation closes with the public-health implications of early, proactive treatment of obesity and diabetes prevention.