Flavonoid intake and cardiovascular disease mortality in a prospective cohort of US adults
- PMID: 22218162
- PMCID: PMC3260072
- DOI: 10.3945/ajcn.111.016634
Flavonoid intake and cardiovascular disease mortality in a prospective cohort of US adults
Abstract
Background: Flavonoids are plant-based phytochemicals with cardiovascular protective properties. Few studies have comprehensively examined flavonoid classes in relation to cardiovascular disease mortality.
Objective: We examined the association between flavonoid intake and cardiovascular disease (CVD) mortality among participants in a large, prospective US cohort.
Design: In 1999, a total of 38,180 men and 60,289 women in the Cancer Prevention Study II Nutrition Cohort with a mean age of 70 and 69 y, respectively, completed questionnaires on medical history and lifestyle behaviors, including a 152-item food-frequency questionnaire. Cox proportional hazards modeling was used to calculate multivariate-adjusted hazard RRs and 95% CIs for associations between total flavonoids, 7 flavonoid classes, and CVD mortality.
Results: During 7 y of follow-up, 1589 CVD deaths in men and 1182 CVD deaths in women occurred. Men and women with total flavonoid intakes in the top (compared with the bottom) quintile had a lower risk of fatal CVD (RR: 0.82; 95% CI: 0.73, 0.92; P-trend = 0.01). Five flavonoid classes-anthocyanidins, flavan-3-ols, flavones, flavonols, and proanthocyanidins-were individually associated with lower risk of fatal CVD (all P-trend < 0.05). In men, total flavonoid intakes were more strongly associated with stroke mortality (RR: 0.63; 95% CI: 0.44, 0.89; P-trend = 0.04) than with ischemic heart disease (RR: 0.90; 95% CI: 0.72, 1.13). Many associations appeared to be nonlinear, with lower risk at intakes above the referent category.
Conclusions: Flavonoid consumption was associated with lower risk of death from CVD. Most inverse associations appeared with intermediate intakes, suggesting that even relatively small amounts of flavonoid-rich foods may be beneficial.
Figures
![FIGURE 1.](https://cdn.statically.io/img/www.ncbi.nlm.nih.gov/pmc/articles/instance/3260072/bin/ajcn9520454fig1.gif)
Comment in
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Flavonoids [corrected] and blood pressure.Am J Clin Nutr. 2012 Feb;95(2):271. doi: 10.3945/ajcn.111.031112. Epub 2011 Dec 28. Am J Clin Nutr. 2012. PMID: 22205308 No abstract available.
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