Prehistoric origins of stomach ulcers uncovered

The bacterium that causes most kinds of stomach ulcers has been present in the human digestive tract ever since Homo sapiens ventured out of Africa some 60,000 years ago, a study says.

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<p><a href="http://www.physorg.com/news90076343.html">Prehistoric origins of stomach ulcers uncovered</a></p> <p>The bacterium that causes most kinds of stomach ulcers has been present in the human digestive tract ever since Homo sapiens ventured out of Africa some 60,000 years ago, a study says. </p>