title: Dairy consumption and lung cancer risk: a meta-analysis of prospective cohort studies.
abstract: BACKGROUND
  Lung cancer risk is the leading cause of cancer-related deaths worldwide. We conducted a meta-analysis to evaluate the relationship between dairy consumption and lung cancer risk.
  
  
  METHODS
  The databases included EMBASE, Medline (PubMed), and Web of Science. The relationship between dairy consumption and lung cancer risk was analyzed by relative risk or odds ratio estimates with 95% confidence intervals (CIs). We identified eight prospective cohort studies, which amounted to 10,344 cases and 61,901 participants.
  
  
  RESULTS
  For milk intake, relative risk was 0.95 (95% CI: 0.76-1.15); heterogeneity was 70.2% (P=0.003). For total dairy product intake, relative risk was 0.96 (95% CI: 0.89-1.03), heterogeneity was 68.4% (P=0.004).
  
  
  CONCLUSIONS
  There was no significant association between dairy consumption and lung cancer risk.
authors.affiliation: Emergency Department, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, People's Republic of China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Yu
authors.affiliation: Emergency Department, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, People's Republic of China.
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.affiliation: Gastrointestinal Surgery Center, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, People's Republic of China.
authors.forename: Kaiwu
authors.initials: K
authors.lastname: Xu
authors.affiliation: Emergency Department, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, People's Republic of China.
authors.forename: Xin
authors.initials: X
authors.lastname: Li
authors.affiliation: Emergency Department, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, People's Republic of China.
authors.forename: Chunlin
authors.initials: C
authors.lastname: Hu
authors.affiliation: Emergency Department, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, People's Republic of China.
authors.forename: Hongyan
authors.initials: H
authors.lastname: Wei
authors.affiliation: Emergency Department, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, People's Republic of China.
authors.forename: Xiaoyun
authors.initials: X
authors.lastname: Zeng
authors.affiliation: Emergency Department, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, People's Republic of China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Jing
keywords: dairy products; lung cancer; meta-analysis; milk