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Tags: green | tea | cancer

Green Tea Combats Cancers: Study

Friday, 02 November 2012 09:16 AM EDT

Good news for green tea lovers: New research has found the beneficial beverage may lower the risk of developing some digestive system cancers, especially cancers of the stomach, esophagus, and colon-rectum.
The findings, by researchers from the Vanderbilt University-Ingram Cancer Center, indicated women who drank green tea at least three times a week for more than six months had a 17 percent reduced risk of all digestive cancers combined. What’s more, those who drank more — about two to three cups per day (at least 150 grams of tea per month) — had an even lower risk (21 percent) of digestive system cancers, compared to non-tea drinkers.
For women who were long-term tea drinkers, the health benefits proved to be the most significant.
SPECIAL: This Small Group of Doctors are Quietly Curing Cancer — Read More.
"For all digestive system cancers combined, the risk was reduced by 27 percent among women who had been drinking tea regularly for at least 20 years," said Sarah Nechuta, who helped conduct the study published online in the American Journal of Clinical Nutrition.
"For colorectal cancer, risk was reduced by 29 percent among the long-term tea drinkers. These results suggest long-term cumulative exposure may be particularly important."
Green tea contains beneficial polyphenols or natural chemicals that include catechins — like EGCG and ECG — that have antioxidant properties. Past studies have found such substances may block the growth and development of cancer by reducing DNA damage and inhibiting tumor cell growth and invasion.
To determine green tea's impact on cancer risk, the Vanderbilt investigators surveyed women enrolled in the Shanghai Women's Health Study, involving some 75,000 middle-aged and older Chinese women. The women were asked if they drank tea, the type of tea consumed, and how much they consumed. Most of the Chinese women reported drinking primarily green tea.
In addition to finding tea drinkers had the lowest overall cancer risks, the researchers said the results showed the greatest health benefits were noted in the rate of digestive cancers. They also noted regular tea drinkers had higher education levels, exercised more, and consumed more fruits and vegetables, compared to non-tea drinkers.
The study was funded, in part, by the National Cancer Institute of the National Institutes of Health.
SPECIAL: This Small Group of Doctors are Quietly Curing Cancer — Read More.

© HealthDay

New research has found green tea may lower the risk of developing some digestive system cancers.
Friday, 02 November 2012 09:16 AM
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