Table 1

Summary of results of case-control and cohort studies of all types of cancer showing an inverse association between consumption of various categories of fruit and vegetables and risk of cancer: Overall level of evidence is I.

FRUIT OR VEGETABLE CATEGORIESNO. OF STUDIES SHOWING DECREASED RISKTOTAL NUMBER OF STUDIES% OF TOTAL STUDIES SHOWING DECREASED RISK
All vegetables597480
All fruit365664
Raw vegetables404687
Cruciferous vegetables385569
Allium vegetables273577
Green vegetables688877
Tomatoes365171
Citrus fruit274166
  • Adapted from American Institute for Cancer Research.2