Green tea has been reported to provide protective effects against gastrointestinal cancer.
In this study, doctors from England and Italy evaluated all epidemiological studies which reported an association between green tea consumption and a reduced risk of gastrointestinal cancer.
|There was no clear evidence that green tea protects against stomach and intestinal cancer.|
|Alimentary Pharmacology and Therapeutics|
The team identified epidemiological studies of green tea consumption and gastrointestinal cancer or preneoplastic lesions using Medline, Embase, Amed, CISCOM, Phytobase and the Cochrane Library.
They only included studies indicating the type of tea and the site of the cancer or lesions.
A total of 21 studies met the teams' inclusion criteria.
Dr Borrelli's team concluded, "These studies seemed to suggest a protective effect of green tea on adenomatous polyps and chronic atrophic gastritis formations".
"By contrast, there was no clear epidemiological evidence to support the suggestion that green tea plays a role in the prevention of stomach and intestinal cancer".