Japanese researchers are throwing cold water on one of the much-touted benefits of green tea.
Their study in today's New England Journal of Medicine suggests that drinking green tea does not prevent stomach cancer, as many believe.
Green tea, a common beverage in Asia, burst into the U.S. market in the past few years, its sales driven by reports of its purported health benefits, including cancer prevention and lowering cholesterol.
But studies have been inconsistent. Some have shown green tea to be beneficial against disease, others have not.
In Japan, researchers looked at stomach cancer because of its high incidence there it is the most common cancer in Japan and the country's high consumption of green tea.
The study compared cups of tea consumed daily and stomach cancer rates and found no connection.
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