• C Daousi, I F Casson, G V Gill, I A MacFarlane, J P H Wilding, and J H Pinkney.
• Diabetes and Endocrinology Research Group, University Hospital Aintree, Liverpool, UK. cdaousi@liverpool.ac.uk
• Postgrad Med J. 2006 Apr 1; 82 (966): 280284280-4.

AimsTo determine the prevalence of overweight and obesity among patients with type 1 and type 2 diabetes mellitus attending a secondary care diabetes clinic in the United Kingdom, and to assess the impact of overweight and obesity on glycaemic control and cardiovascular risk factors in patients with type 2 diabetes.Methods3637 patients with diabetes were identified from the hospital electronic diabetes register, 916 with type 1 diabetes (mean (SD) age 40.4 (15.1) years, 496 male) and 2721 with type 2 diabetes (mean (SD) age 62.5 (11.8) years, 1436 male). Data on body mass index (BMI), glycaemic control, lipid profiles, and blood pressure were extracted.ResultsOf patients with type 1 diabetes, 55.3% were overweight (BMI >or=25 kg/m(2)), 16.6% were obese (BMI >or=30 kg/m(2)), and 0.4% had morbid obesity (BMI >or=40 kg/m(2)). In contrast, 86% of patients with type 2 diabetes were overweight or obese, 52% were obese, and 8.1% had morbid obesity. Obese patients with type 2 diabetes were younger, had poorer glycaemic control, higher blood pressures, worse lipid profiles, and were more likely to be receiving antihypertensive and lipid lowering drugs compared with patients with BMI <30 kg/m(2).ConclusionsObesity is the rule among patients attending this hospital diabetes clinic, with 86% of those with type 2 diabetes overweight or obese. Obesity is associated with significantly worse cardiovascular risk factors in this patient group, suggesting that more active interventions to control weight gain would be appropriate.

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