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Dietary flavonoid intake and non-Hodgkin lymphoma risk
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DOI：10.1093/ajcn/87.5.1439.png)
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Abstract
En 中文
Background: The role of dietary factors in non-Hodgkin lymphoma (NHL) risk is not yet well understood. Dietary flavonoids are polyphenolic compounds proposed to be anticarcinogenic. Flavonoids are well-characterized antioxidants and metal chelators, and certain flavonoids exhibit antiproliferative and antiestrogenic effects. Objective: We aimed to evaluate the hypothesis that higher flavonoid intake is associated with lower NHL risk. Design: During 1998-2000, we identified incident NHL cases aged 20-74 y from 4 US Surveillance, Epidemiology, and End Results cancer registries. Controls without history of NHL were selected by random-digit dialing or from Medicare files and frequency-matched to cases by age, center, race, and sex. Using 3 recently developed US Department of Agriculture nutrient-specific databases, flavonoid intake was estimated from participant responses to a 117-item food-frequency questionnaire (n = 466 cases and 390 controls). NHL risk in relation to flavonoid intake in quartiles was evaluated after adjustment for age, sex, registry, education, NHL family history, and energy intake. Results: Higher total flavonoid intake was significantly associated with lower risk of NHL (P for trend < 0.01): a 47% lower risk in the highest quartile of intake than in the lowest (95% CI: 31%, 73%). Higher intakes of flavonols, epicatechins, anthocyanidins, and proanthocyanidins were each significantly associated with decreased NHL risk. Similar patterns of risk were observed for the major NHL subtypes-diffuse large B-cell lymphoma (n = 167) and follicular lymphoma (n = 146). Conclusion: A higher intake of flavonoids, dietary components with several putative anticarcinogenic activities, may be associated with lower NHL risk.
Keywords:
CIGARETTE-SMOKING
CANCER
EPIDEMIOLOGY
FRUIT
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