Nine independent studies [ 8 , 9 , 10 , 19 , 20 , 21 , 22 , 23 , 24 ] investigated the relationship between fruit intake and lung cancer risk in never smokers, and a higher fruit consumption showed a borderline significant association (RR = 0.83, 95% CI: 0.66, 1.06; I 2 = 27.2%, p for heterogeneity = 0.177).
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The Associations of Fruit and Vegetable Intake with Lung Cancer Risk in Participants with Different Smoking Status: A Meta-Analysis of Prospective Cohort Studies.
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