Fruits and vegetables consumption and esophageal squamous cell carcinoma: a case-control study

Nutr Cancer. 2011;63(5):707-13. doi: 10.1080/01635581.2011.563028. Epub 2011 Jun 21.

Abstract

The authors examined the association of food group intakes and the risk of esophageal squamous cell carcinoma (SCC) in a hospital-based case-control study in Iran. In total, 47 patients with esophageal SCC and 96 controls underwent face-to-face private interviews. Usual dietary intake was assessed using a semiquantitative food frequency questionnaire. Multivariate logistic regression was used to estimate odds ratios and 95% confidence intervals. Cases had higher tobacco consumption and symptomatic gastresophageal reflux, whereas controls had higher mean body mass index (25.3 vs. 20.4) and years of education. A protective independent effect was observed for the highest tertile of total fruit consumption (OR: 0.13, CI: 0.04-0.45, P value = 0.001). Within the group of fruits, a significant inverse association was observed for bananas and kiwis (P for trends: 0.03 and 0.02, respectively). The risk of SCC decreased monotonically with increasing intake frequency of oranges (P value for trend = 0.01). The effect of total vegetable consumption on esophageal SCC was not significant, although a reduction in risk was observed in the highest tertile of intake (OR: 0.66, CI: 0.23-1.87, P value = 0.43). The results of the present study suggest a reasonable association between fruit consumption and esophageal SCC in a Middle Eastern high-risk population.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Carcinoma, Squamous Cell / epidemiology*
  • Carcinoma, Squamous Cell / etiology
  • Carcinoma, Squamous Cell / prevention & control
  • Case-Control Studies
  • Diet / adverse effects
  • Esophageal Neoplasms / epidemiology*
  • Esophageal Neoplasms / etiology
  • Esophageal Neoplasms / prevention & control
  • Feeding Behavior
  • Female
  • Fruit*
  • Gastroesophageal Reflux / physiopathology
  • Hospitals, General
  • Humans
  • Iran / epidemiology
  • Male
  • Middle Aged
  • Nicotiana / adverse effects
  • Risk Factors
  • Surveys and Questionnaires
  • Vegetables*