Fruits and Vegetables and Lung Cancer Risk in Never Smokers. A Multicentric and Pooled Case-Control Study.

Background: The etiology of lung cancer in never smokers is partly unknown. We aimed to assess the effect of fruits and vegetables consumption on lung cancer risk in never smokers.

Methods: We pooled five multicenter case-control studies performed in Northwestern Spain.

Alcohol consumption and lung cancer risk in never smokers.

Objective: The main objective of this study is to analyse the role of alcohol consumption on lung cancer risk in people who have never smoked.

Methods: We conducted a systematic review of the scientific literature following the PRISMA statement. We searched Medline, EMBASE and CINAHL using different combinations of MeSH terms and free text.

Leisure time activities related to carcinogen exposure and lung cancer risk in never smokers. A case-control study.

We aim to assess the relationship between leisure time activities related to exposure to carcinogenic substances and lung cancer risk in a hospital-based case-control study performed in never smokers. We included never smoking cases with anatomopathologically confirmed lung cancer and never smoking controls undergoing trivial surgery, at 8 Spanish hospitals. The study was conducted between January 2011 and June 2013.