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Drug and Therapeutics Bulletin (DTB) April, May, June 2013 issues http://dtb.bmj.com HbA1c targets in type 2 diabetes: guidelines and evidence Aims of treatment for type-2 diabetes include minimising long-term complications (eg, cardiovascular disease, blindness, chronic kidney disease, premature mortality) and avoiding the unwanted effects of treatment (eg, severe hypoglycaemia, weight gain). Publication of the UK Prospective Diabetes Study (UKPDS) 33 in 1998 suggested that ‘intensive blood glucose control’ to lower the glycated haemoglobin (HbA1c) in people with type 2 diabetes reduced microvascular disease but not macrovascular complications. The UKPDS 34 study in overweight patients found that metformin produced less of a reduction in HbA1c but reduced cardiovascular compli…