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Randomised controlled trial
In people with newly diagnosed type 2 diabetes an intensive dietary intervention, with or without an activity programme, improves glycaemic control over 12 months compared with usual care
  1. Kirsten Coppell
  1. Dunedin School of Medicine, University of Otago, Dunedin, New Zealand
  1. Correspondence to Kirsten Coppell
    Dunedin School of Medicine, University of Otago, P O Box 913, Dunedin 9054, New Zealand; kirsten.coppell{at}

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Lifestyle modification is the cornerstone of treatment in type 2 diabetes. Improved nutrition or increased physical activity both improve glycaemic control,1 2 but whether diet and exercise have a synergistic effect is not established. This study examined whether an intensive dietary intervention plus physical activity advice had additional benefits compared with an intensive dietary intervention only in newly diagnosed type 2 diabetes patients.


This 52-week multicentre trial in South West England involved 593 patients aged 31 to 80 years with type 2 diabetes diagnosed 5–8 months previously randomised with concealed allocation to three groups: usual care (control group), intensive diet and intensive diet plus physical activity, in a 2:5:5 ratio. Exclusion criteria included …

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  • Competing interests None.