Abstract P393: Consumption of Bread and Tortilla and Incidence of Self-Reported Hypertension in Mexican Women
Background: Mexico is undergoing a fast-paced epidemiologic and nutritional transition and hypertension affects 31% of Mexicans. Bread and wheat tortilla have almost three times more sodium than corn tortillas and long-term sodium intake may increase the risk of hypertension.
Methods and Results: We investigated the relation between bread and tortilla intake and the incidence of self-reported hypertension in 43,619 women from the Mexican Teachers’ Cohort who were free of hypertension at baseline in 2008 when diet was assessed using a food frequency questionnaire. Between baseline and 2011 we identified 2,699 incident cases of self-reported hypertension. Total bread (white and whole grain) and corn and wheat tortilla consumption were categorized into energy-adjusted quintiles and logistic regression models were fit. Median servings per week for extreme categories were 2.0 and 12.5 for total bread (1.4 and 11.0 for white bread; 0.2 and 3.0 for whole grain), 3.0 and 17.5 for corn tortilla, and 0.2 and 3.0 for wheat tortilla, respectively. The multivariable-adjusted odds of hypertension in the highest quintile of intake of total bread were 18% higher than the odds for individuals in the lowest quintile (OR=1.18; 95%CI=1.03-1.35; P-trend=0.12); corn tortilla intake was not significantly associated with hypertension (OR=0.88; 95%CI=0.76-1.01; P-trend=0.05). White bread appeared to be responsible for the observed association, the OR comparing extreme quintiles was 1.18 (OR=1.18; 95%CI=1.03-1.35; P-trend=0.0007). We did not observe an association between whole grain bread and wheat tortilla and hypertension.
Conclusion: Bread consumption may affect the incidence of hypertension, while corn tortilla, a substitute for bread in the Hispanic population was not associated with incident hypertension. Results need to be confirmed with extended follow-up.
Author Disclosures: A. Monge: None. T. Barrientos: None. I. Romieu: None. R. Lopez-Ridaura: None. M. Lajous: B. Research Grant; Significant; Non-restricted investigator-initiated grant from Astra Zeneca. C. Other Research Support; Modest; Research support from SwissRe.
- © 2014 by American Heart Association, Inc.