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Abstract Title:

Raw garlic consumption and lung cancer in a Chinese population.

Abstract Source:

Cancer Epidemiol Biomarkers Prev. 2016 Jan 25. Epub 2016 Jan 25. PMID: 26809277

Abstract Author(s):

Ajay A Myneni, Shen-Chih Chang, Rungui Niu, Li Liu, Mya K Swanson, Jiawei Li, Jia Su, Gary A Giovino, Shunzhang Yu, Zuo-Feng Zhang, Lina Mu

Article Affiliation:

Ajay A Myneni

Abstract:

BACKGROUND: Evidence of anti-cancer properties of garlic for different cancer sites has been reported previously in in-vitro and in-vivo experimental studies but there is limited epidemiological evidence on the association between garlic and lung cancer.

METHODS: We examined the association between raw garlic consumption and lung cancer in a case-control study conducted between 2005 and 2007 in Taiyuan, China. Epidemiological data was collected by face-to-face interviews from 399 incident lung cancer cases and 466 healthy controls. We used unconditional logistic regression models to estimate crude and adjusted odds ratios (aOR) and their 95% confidence intervals (CI). Adjusted models controlled for age, sex, average annual household income 10 years ago, smoking, and indoor air pollution.

RESULTS: Compared to no intake, raw garlic intake was associated with lower risk of development of lung cancer with a dose-response pattern (aOR for<2 times per week = 0.56, 95% CI: 0.39-0.81 and aOR for≥2 times per week = 0.50, 95% CI: 0.34 - 0.74; Ptrend = 0.0002). Exploratory analysis showed an additive interaction of raw garlic consumption with indoor air pollution and with any supplement use in association with lung cancer.

CONCLUSIONS: The results of the current study suggest that raw garlic consumption is associated with reduced risk of lung cancer in a Chinese population.

IMPACT: This study contributes to the limited research in human population on the association between garlic and lung cancer and advocates further investigation into the use of garlic in chemoprevention of lung cancer.

Study Type : Human Study

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