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Cancer Causes Control. 2005 Dec;16(10):1165-9.

Glycemic load, glycemic index, and the risk of breast cancer among Mexican women.

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  • 1Instituto Nacional de Salud Publica, Cuernavaca, México.

Abstract

OBJECTIVE:

The amount and composition of dietary carbohydrates is a major determinant of postprandial blood glucose and insulin, and risk of breast cancer has been positively associated with plasma levels of insulin and insulin-like growth factor 1. We sought to evaluate dietary glycemic load (GL) and overall glycemic index (GI) in relation to breast cancer risk in Mexican women.

METHODS:

We examined dietary GL and overall GI and breast cancer risk among 475 women with histologically-confirmed breast cancer and a random sample of 1391 women from Mexico City households. Diet was assessed using a food frequency questionnaire adapted to the Mexican population.

RESULTS:

The multivariate adjusted or for all women comparing the highest quartile of dietary GL with the lowest quartile was 1.62 (95% CI 1.13-2.32; p-test for trend = 0.02) with a significant trend. In postmenopausal women, the multivariate adjusted or comparing the extreme quartiles was 2.18 (95% CI 1.34-3.55; p-test for trend=0.005). Overall GI was not significantly associated with risk of breast cancer.

CONCLUSION:

High intake of rapidly absorbed carbohydrate appears to play an important role in the risk of breast cancer in Mexican women.

PMID:
16215866
[PubMed - indexed for MEDLINE]
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