Producers Resource Center

Green Tea May Curb Some Cancers

According to a study by Japanese researchers noted that it may take at least  5 cups a day to reduce the risk.

Drinking green tea has been associated with lower risk of dying and heart disease deaths, medical experts have reported.  The just-released study notes that drinking green tea may have a favorable effect “for particular cancers.”

Researchers gathered information on the diets and green tea drinking habits of a large group of Japanese adults aged 40 to 79 years old.  They followed the group for development of blood and “lymph system” cancers. The lymph system is a major component of the body’s immune system.

Some 40,000 men and women who participated in the study had no previous history of cancer.  During 9 years of follow up, 157 blood, bone marrow, and lymph system cancers developed in the study group.

The researchers found that the overall risk for blood cancers was 42 percent lower among study participants who drank 5 or more, versus 1 or fewer, cups of green tea daily.  Drinking 5 or more cups of green tea daily was also associated with 48 percent lower risk for lymph system cancers.

These associations held up in analyses that allowed for age, gender, education, smoking status and history, alcohol use, and fish and soybean consumption.  The report appears in the American Journal of Epidemiology, September 15, 2009.

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