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Type 2 diabetes can be a devastating disease - and treating the disease is increasingly a burden for health services all over the world. But new encouraging research suggests weight loss can only put the disease in short-term remission, but - for nearly a quarter of patients - keep them free of diabetes for at least five years. Professor Roy Taylor of Newcastle University is the co-author of the research. He explains how it works. (Photo: A pharmacist checking a customers blood sugar levels with an insulin pen. Credit: Getty Images)