FAST FOOD CONSUMPTION AND GESTATIONAL DIABETES INCIDENCE IN THE SUN PROJECT

Background: Gestational diabetes prevalence is increasing, mostly because obesity among women of reproductive age iscontinuously escalating. We aimed to investigate the incidence of gestational diabetes according to the consumption of fastfood in a cohort of university graduates.Methods: The prospective dynamic ‘‘Seguimiento Universidad de Navarra’’ (SUN) cohort included data of 3,048 womeninitially free of diabetes or previous gestational diabetes who reported at least one pregnancy between December 1999 andMarch 2011. Fast food consumption was assessed through a validated 136-item semi-quantitative food frequencyquestionnaire. Fast food was defined as the consumption of hamburgers, sausages, and pizza. Three categories of fast foodwere established: low (0–3 servings/month), intermediate (.3 servings/month and #2 servings/week) and high (.2servings/week). Non-conditional logistic regression models were used to adjust for potential confounders.Results: We identified 159 incident cases of gestational diabetes during follow-up. After adjusting for age, baseline bodymass index, total energy intake, smoking, physical activity, family history of diabetes, cardiovascular disease/hypertension atbaseline, parity, adherence to Mediterranean dietary pattern, alcohol intake, fiber intake, and sugar-sweetened soft drinksconsumption, fast food consumption was significantly associated with a higher risk of incident gestational diabetes, withmultivariate adjusted OR of 1.31 (95% conficence interval [CI]:0.81–2.13) and 1.86 (95% CI: 1.13–3.06) for the intermediateand high categories, respectively, versus the lowest category of baseline fast food consumption (p for linear trend: 0.007).Conclusion: Our results suggest that pre-pregnancy higher consumption of fast food is an independent risk factor forgestational diabetes.