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Systematic review and meta-analysis
Bariatric surgery produces greater weight loss and improvements in medical conditions than non-surgical treatment of obesity
  1. Kristoffel Dumon,
  2. Goda Savulionyte
  1. Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
  1. Correspondence to: Dr Kristoffel Dumon, Department of Surgery, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA 19104, USA; dumonk{at}

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Bariatric surgery is a widely accepted treatment for obesity, with over 340 000 procedures performed worldwide every year. It has shown to reduce cardiovascular morbidity and mortality, induce diabetes remission, improve obstructive sleep apnoea, and help with various other conditions. This has important implications for countries like the USA, where obesity has reached epidemic levels, affecting over a third of the population.1 Results from recent studies suggest that surgery is more effective than non-surgical treatments in producing weight loss and in decreasing related morbidity and mortality.1–3 The outcomes of the Look AHEAD (Action for Health in Diabetes study), focusing on lifestyle-induced weight …

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  • Competing interests None.