Gong Yang
Faculty Member
Last active: 4/27/2017

Prospective study of dietary carbohydrates, glycemic index, glycemic load, and incidence of type 2 diabetes mellitus in middle-aged Chinese women.

Villegas R, Liu S, Gao YT, Yang G, Li H, Zheng W, Shu XO
Arch Intern Med. 2007 167 (21): 2310-6

PMID: 18039989 · DOI:10.1001/archinte.167.21.2310

BACKGROUND - Much uncertainty exists about the role of dietary glycemic index and glycemic load in the development of type 2 diabetes mellitus, especially in populations that traditionally subsist on a diet high in carbohydrates.

METHODS - We observed a cohort of 64,227 Chinese women with no history of diabetes or other chronic disease at baseline for 4.6 years. In-person interviews were conducted to collect data on dietary habits, physical activity, and other relevant information using a validated questionnaire. Incident diabetes cases were identified via in-person follow-up. Associations between dietary carbohydrate intake, glycemic index, and glycemic load and diabetes incidence were evaluated using multivariable Cox proportional hazards models.

RESULTS - We identified 1,608 incident cases of type 2 diabetes mellitus in 297,755 person-years of follow-up. Dietary carbohydrate intake and consumption of rice were positively associated with risk of developing type 2 diabetes mellitus. The multivariable-adjusted estimates of relative risk comparing the highest vs the lowest quintiles of intake were 1.28 (95% confidence interval, 1.09-1.50) for carbohydrates and 1.78 (95% confidence interval, 1.48-2.15) for rice. The relative risk for increasing quintiles of intake was 1.00, 1.04, 1.02, 1.09, and 1.21 (95% confidence interval, 1.03-1.43) for dietary glycemic index and 1.00, 1.06, 0.97, 1.23, and 1.34 (95% confidence interval, 1.13-1.58) for dietary glycemic load.

CONCLUSION - High intake of foods with a high glycemic index and glycemic load, especially rice, the main carbohydrate-contributing food in this population, may increase the risk of type 2 diabetes mellitus in Chinese women.

MeSH Terms (21)

Adult Aged Blood Glucose China Cohort Studies Data Collection Diabetes Mellitus, Type 2 Dietary Carbohydrates Female Follow-Up Studies Glycemic Index Humans Incidence Middle Aged Multivariate Analysis Oryza Proportional Hazards Models Prospective Studies Risk Factors Surveys and Questionnaires Time Factors

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