Dietary changes in a diabetes prevention intervention among people with prediabetes: the Diabetes Community Lifestyle Improvement Program trial.
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Diabetes prevention interventions have been less successful in Asian Indians compared to other populations, which may be due in part to dietary differences. The objective of this study was to determine the impact of a diabetes prevention intervention on diet and risk of diabetes in Asian Indians at high risk.Data were included from the Diabetes Community Lifestyle Improvement Program (D-CLIP), a randomized control trial to prevent diabetes in overweight/obese Asian Indian adults (20-65 years) with prediabetes. Respondents received standard treatment (control; n = 283) or a 6-month intervention (n = 295) that included education and support to reduce intakes of fat and total calories (kilocalories; kcal). Diet was ascertained using a food frequency questionnaire, and incident diabetes was determined from annual 2-h plasma glucose post-oral glucose tolerance test or biannual fasting plasma glucose.There were 485 (control 240; intervention 245) respondents with complete diet data at baseline. At 6 months, the intervention was associated with decreased intake of total energy (- 185.6 kcal/day; 95% CI - 353.6, - 17.5 kcal/day) and refined cereals (- 7.2 g/1000 kcal; 95% CI - 12.7, - 1.7 g/1000 kcal), and increased intakes of fruits and vegetables (33.4 g/1000 kcal; 95% CI 16.0, 50.8 g/1000 kcal). The intervention group was half (HR 0.49; 95% CI 0.25, 0.94) as likely to develop diabetes at 1 year, and the hazard was significantly attenuated (12.2%; P = 0.015) with adjustment for fruits and vegetable intake.The D-CLIP decreased the total energy intake and increased the intakes of fruits and vegetables, and reduced the 1-year incidence of diabetes by half.Clinicaltrails.gov # NCT01283308.
