A woman drinks a cup of coffee in a store at Qianmen Commercial Street in central Beijing, April 19, 2012.

A woman drinks a cup of coffee in a store at Qianmen Commercial Street in central Beijing, April 19, 2012.

View caption Jason Lee/Landov

Can Coffee Help You Live Longer?

Journalists seem to love writing about scientific studies on coffee and wine, and we're no exception. The latest is that a big new study finds people who drink two or three cups of coffee a day may cut the risk of dying from certain diseases, but scientists don't really know why.

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