A team of researchers studied the use of green tea for cancer prevention because he suspected that the antioxidants protect the entry of the deadly disease, especially because it will include bacterial attack substances associated with stomach tumors.
But earlier studies did not obtain conclusive results, they write in the journal Gut. To better understand the real effects of green tea, Dr M. Inoue, National Cancer Center in Tokyo, and colleagues reviewed six of their previous works.
Together, the studies involving more than 219,000 men and women 40 years and older, which followed more than seven to 11 years. Four out of five respondents say they drink green tea every day; third drank five or more cups per day.
During follow up, approximately 2,500 of the nearly 100,000 people and about 1,000 from more than 118,000 female participants developed stomach cancer.
The researchers found no relationship between humans of the highest tea consumption and lower cancer risk.
A 20 percent decreased risk of stomach cancer observed among women who drank five cups or more, more than or less than a cup of green tea per day, remained after controlling for smoking.
But risk reduction is applied to tumors that arise in certain parts of the stomach.
The study does not prove cause and effect, but studies show that more needed to confirm that green tea reduces the risk of developing stomach cancer or whether women with low risk of autism are those who consume more tea.
Tags: Autism, Bacterial, cancer, Green tea, Stomach, Stomach tumors,