Olive trees and incidence of breast and colorectal cancers: A Systematic review
Journal Title: International Journal of Engineering and Science Invention - Year 2017, Vol 6, Issue 7
Abstract
Introduction: The aim of this systematic review was to find the role of olive in preventing or inhibiting breast / colorectal cancers; and specify which part of the olive tree is most efficient. Methods: Only 14 full text eligible articles were included. PRISMA checklist was used. Also, attention was paid for bias sources. Results: Studies were categorized into three categories: experimental, observational, and reviews. It was found that 9 out of 14 studies of breast cancer demonstrated or suggested that olives had a protective role, and 2 studies demonstrated an inhibitory role. The 3 reminder studies suggested both protective and inhibitory roles. Also, 3 studies of colorectal cancer were included. Two studies had shown an inhibitory role, while the third study presented protective role. Discussion: The inconsistent association between olives and risk of cancer could be due to the fact that people eat mixtures of foods with different nutrient contents that may interact synergistically. Both olives and olive oil contain essential amounts of other compounds considered anticancer agents. Moreover, Oleuropein inhibits cell growth, and has direct anti-tumor effects. Conclusion: The role of olive was mainly protective, and the most effective part was the olive oil, even fried olive oil
Authors and Affiliations
Eham S. Al- Ajlouni
Keywords
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