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Is a failure to recognize an increase in food intake a key to understanding insulin-induced weight gain?

¹Department of Diabetes and Nutrition, CHU Angers F-49033, France
²University of Ulster, Coleraine, N.Ireland

patrick.ritz{at}wanadoo.fr

ABSTRACT

The present study aimed to assess the contribution of energy intake (EI) to positive energy balance and weight gain with insulin therapy. Changes in EI (self-report, weighed food intake), dietary behaviour (auto-questionnaires), resting energy expenditure (REE, indirect calorimetry), physical activity (accelerometry) and glucosuria were monitored over the first 6 months of insulin therapy in 46 diabetic adults. No change in REE, activity or glucosuria could explain weight gain in the type-1 (4.1±0.6kg, p<0.0001) or type-2 (1.8±0.8kg, p=0.02) diabetic groups. An increase in EI provides the most likely explanation for weight gain with insulin. However it is not being recognized because of significant under-estimation of self-reported food intake, which appears associated with increased dietary restraint.

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