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05-24-2018 | Diet | Article

Intake of cocoa products and risk of type-2 diabetes: the multiethnic cohort

Journal: European Journal of Clinical Nutrition

Authors: Gertraud Maskarinec, Simone Jacobs, Yurii Shvetsov, Carol J. Boushey, Veronica W. Setiawan, Laurence N. Kolonel, Christopher A. Haiman, Loïc Le Marchand

Publisher: Nature Publishing Group UK

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Abstract

Background/objectives

As cocoa products may be protective against chronic disease due to their polyphenol content, the current study determined the association of chocolate consumption and flavanol intake with type-2 diabetes (T2D) incidence in the Multiethnic Cohort (MEC) Study.

Subjects/methods

The analysis included 151,691 participants of Native Hawaiian, Japanese American, Latino, African American, and white ancestry with 8487 incident T2D cases after 7.8 ± 3.5 years of follow-up. T2D status was based on three self-reports and confirmed by at least one of three administrative data sources. Dietary intake was assessed using a validated quantitative food frequency questionnaire, and flavanols from cocoa products were estimated from self-reported consumption of chocolate candy and drinks. Cox hazard regression, adjusted for potential confounders was applied to estimate hazard ratios (HR) and 95% confidence intervals (CI).

Results

For chocolate candy, both the highest vs. lowest (≥10 vs. <1 g/day) consumption (HR = 0.90; 95% CI, 0.83–0.97; ptrend = 0.01) and the frequency (≥4/week vs. <1/month) of intake (HR = 0.81; 95% CI, 0.72–0.91; ptrend = 0.0002) were inversely associated with T2D. The estimated flavanol intake from cocoa products (≥3 vs. <1 mg/day) also showed an inverse association with T2D risk (HR = 0.93; 95% CI, 0.88–0.99; ptrend = 0.02). Significant interaction terms indicated that the inverse relation was limited to Japanese Americans, normal-weight individuals, and to those without comorbidities.

Conclusions

The current study confirms previous reports that participants with high intake of chocolate products and cocoa-derived flavanols experience a reduced risk of developing T2D even after controlling for sugar intake, diet quality, and other aspects of the diet.
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