Good article by Jane Brody of the New York Times, dealing with the myths and truths about coffee.
Through the years, the public has been buffeted by much misguided information about caffeine and its most common source, coffee. In March the Center for Science in the Public Interest published a comprehensive appraisal of scientific reports in its Nutrition Action Healthletter. Its findings and those of other research reports follow.
http://www.nytimes.com/2008/08/05/health/05brod.html?_r=1&ref=health&oref=slogin