According to a review by the National Center for Biotechnology Information (NCBI), an association between citrus fruits and risk of gastric cancer has been found. The review was conducted by investigating available data and publications on diet and stomach cancers since April 2007. All of the collected data exhibited the given association.
It was found, in reference with 14 articles and several other studies, a 28% reduction in stomach cancer risk was linked with higher intake of citrus fruits. The studies asserted the protective action of citrus fruits against stomach cancers.
Another investigation of electronic databases and references of various publications and studies up to December 2007 was conducted that studied the linkage between pancreatic cancer risk and intake of citrus fruits. General variance methods were used for extracting the results regarding higher and lower intake of citrus fruits in association with pancreatic cancer risk from these articles. Nine articles (4 case studies and 5 cohort studies) were found to be eligible. An inverse association between intake of citrus fruits and pancreatic cancer risk was observed, albeit the results did vary substantially across the studies.
Another review studied eligible data from Italy and Switzerland, covering 955 stomach cancer, 527 laryngeal cancer, 1,294 prostate cancer, 767 renal cell cancer, 454 endometrial cancer, 3634 large bowel cancer, and 1031 ovarian cancer cases. The investigation revealed that citrus fruits also portray a protective role against digestive cancers and the cancers of the upper respiratory tract. However, any such viable associations for endometrial, prostate, breast, ovarian and renal cell cancers have not been found.
Hence, a suitable intake of citrus fruits is highly recommended, after taking in your doctor’s advice.