The relation of sugar intake to beta cell function in overweight Latino children - PubMed (original) (raw)

The relation of sugar intake to beta cell function in overweight Latino children

Jaimie N Davis et al. Am J Clin Nutr. 2005 Nov.

Abstract

Background: Few studies have investigated the association between sugar intake and insulin dynamics in children, and none have examined this association in overweight Latino youth.

Objective: We aimed to examine the relation between dietary components, especially sugar intake, and insulin dynamics in overweight Latino youth.

Design: We examined 63 overweight Latino children aged 9-13 y. Dietary intake was determined by 3-d records, and body composition was measured with dual-energy X-ray absorptiometry. Insulin sensitivity (S(I)), acute insulin response (AIR), and disposition index (an index of beta cell function) were measured by using a frequently sampled intravenous-glucose-tolerance test and minimal modeling. Hierarchical regression analysis ascertained the potential independent relation between insulin dynamics and dietary components.

Results: The relation between macronutrient intake and any variable related to insulin dynamics was not significant. However, higher total sugar intake, although not related to S(I), was significantly associated with lower AIR (beta = -0.296, P = 0.045) and lower beta cell function (beta = -0.421, P = 0.043), independent of the covariates age, sex, body composition, Tanner stage, and energy intake. Sugar-sweetened beverage intakes trended toward inverse association with lower AIR (beta = -0.219, P = 0.072) and beta cell function (beta = -0.298, P = 0.077).

Conclusions: In overweight Latino children, higher intakes of sugar and sugar-sweetened beverages were associated with lower AIR and disposition index, which suggested that these children already have early signs of poor beta cell function. These results emphasize the need for early nutritional interventions to reduce daily sugar intake in overweight Latino children and potentially reduce their risk for type 2 diabetes.

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Figures

FIGURE 1

Sex differences in the association between sugar carbohydrate intake (g/d) and disposition index (DI). There was a significant sugar carbohydrate effect for DI (P = 0.043). The sex effect and the sex × sugar carbohydrate interaction for DI were not significant (both: P > 0.05). The relation shows that the greater the total sugar intake, the lower the DI or β cell function (_R_2 = 0.18, P = 0.014). Statistical comparisons were made by using the log-transformed DI, but data are shown as nontransformed values for ease of interpretation.

FIGURE 2

Sex differences in the association between sugar-sweetened beverage consumption (servings/d) and disposition index (DI). There was a trend for a sugar-sweetened beverage effect for DI (P = 0.077). The sex effect and the sex × sugar-sweetened beverage interaction for DI were not significant (both: P > 0.05). The relation shows that the greater the sugar-sweetened beverage intake, the lower the DI or β cell function (_R_2 = 0.21, P = 0.06). Statistical comparisons were made by using the log-transformed DI, but data are shown as nontransformed values for ease of interpretation.

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The relation of sugar intake to beta cell function in overweight Latino children - PubMed (original) (raw)