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Factoring Risks to the Heart

A Change of Heart. How the Framingham Heart Study Helped Unravel the Mysteries of Cardiovascular Disease. By Daniel Levy and Susan Brink. Knopf, New York, 2005. 268 pp. $26.95, C$37.95. ISBN 0-375-41275-1. The authors blend together history, anecdotes, and lessons for reducing the risks of cardiovascular disease drawn from the almost 60 years of a landmark epidemiological study.