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Association of dietary glycaemic index, glycaemic load, and total carbohydrates with incidence of type-2 diabetes in adults aged ??0혻years: The Multi-Rural Communities Cohort (MRCohort)

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Author(s)
Se Young KimHye Won WooYoung-Hoon LeeDong Hoon ShinMin-Ho ShinBo Youl ChoiMi Kyung Kim
Publication Year
2020
Keyword
Type 2 diabetesGlycaemic indexGlycaemic loadCarbohydratesProspective cohort study
Abstract
Aims:
To examine potential associations between the glycaemic index (GI), glycaemic load (GL), and carbohydrates and the incidence risk of type-2 diabetes (T2D) and the effect modification of obesity among Korean adults aged ≥40 years.

Method:
Incidence rate ratios (IRRs) and 95% confidence intervals (CIs) for T2D were estimated in 8310 participants using a modified Poisson regression model. Dietary indices were averaged using repeated dietary assessments during follow-up.

Result:
After adjusting for potential confounders, a positive association between GI and T2D was found among women (IRR = 1.63, 95% CI = 1.06–2.51 in the highest tertile (T3) vs. the lowest tertile (T1) for GI, p trend = 0.0310), but not for GL and carbohydrate intake. This positive association with GI was stronger in obese women (IRR = 1.91, 95% CI: 1.15–3.19 in T3 vs. T1, p trend = 0.0137 for body mass index ≥23 kg/m 2 ; IRR = 2.35, 95% CI: 1.01–5.48, p trend = 0.0350 for waist circumference (WC) ≥ 85 cm). In men, there was no association before stratification by obesity, but IRRs of GI (T3 vs. T1) were significant and stronger with increased WCs (IRR = 2.26, 95% CI: 1.02–4.98, p trend = 0.0439 for WC ≥ 90 cm).

Conclusion:
GI may be positively associated with the incidence of T2D in women, particularly in obese women. The association of GI with T2D incidence risk may also be positive even in men with high WC.
Department
Dept. of Preventive Medicine (예방의학)
Publisher
School of Medicine (의과대학)
Citation
Diabetes Research and Clinical Practice, Vol.160(null) : 108007-108007, 2020
Type
Article
ISSN
1872-8227
DOI
10.1016/j.diabres.2020.108007
URI
http://kumel.medlib.dsmc.or.kr/handle/2015.oak/42728
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