Journal
EUROPEAN JOURNAL OF NUTRITION
Volume 57, Issue 8, Pages 2723-2733Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00394-017-1538-4
Keywords
Food variety; Dietary diversity; Dietary patterns; Type 2 diabetes; Africa
Categories
Funding
- European Commission under the Framework Programme [278901]
- NutriAct-Competence Cluster Nutrition Research Berlin-Potsdam - German Federal Ministry of Education and Research [FKZ: 01EA1408A-G]
- AMC Biobank
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Purpose The importance of dietary diversification for type 2 diabetes (T2D) risk remains controversial. We investigated associations of between- and within-food group variety with T2D, and the role of dietary diversification for the relationships between previously identified dietary patterns (DPs) and T2D among Ghanaian adults. Methods In the multi-center cross-sectional Research on Obesity and Diabetes among African Migrants (RODAM) Study (n=3810; Ghanaian residence, 56%; mean age, 46.2years; women, 63%), we constructed the Food Variety Score (FVS; 0-20 points), the Dietary Diversity Score (DDS; 0-7 points), and the Diet Quality Index-International (DQI-I) variety component (0-20 points). The associations of these scores, of a rice, pasta, meat and fish DP, of a mixed DP, and of a roots, tubers and plantain DP with T2D were calculated by logistic regression. Results The FVS was inversely associated with T2D, adjusted for socio-demographic, lifestyle, and anthropometric factors [odds ratio (OR) for T2D per 1 standard deviation (SD) increase: 0.81; 95% confidence interval (CI) 0.71-0.93]. The DDS and the DQI-I variety component were not associated with T2D. There was no association of the mixed DP and the roots, tubers and plantain DP with T2D. Yet, the rice, pasta, meat and fish DP is inversely associated with T2D (OR for T2D per 1 SD increase: 0.82; 95% CI 0.71-0.95); this effect was slightly attenuated by the FVS. Conclusions In this Ghanaian population, between-food group variety may exert beneficial effects on glucose metabolism and partially explains the inverse association of the rice, pasta, meat and fish DP with T2D.
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