Michael Smolensky
* Author, The Body Clock Guide to Better Health (Henry Holt and Company, 2000)
* Editor, Chronobiology International
* Co-founder and former director, Herman Hospital Clinical Chronobiology Center and Clinic
* Professor, Environmental Physiology, School of Public Health, University of Texas Health Science Center, Houston, Texas

Dr. William Hrushesky
* Director, Research, W.J.B. Dorn Veterans Affairs Medical Center
* Professor, University of South Carolina School of Medicine, Columbia, South Carolina

Richard Stevens
* Cancer Epidemiologist, University of Connecticut Health Center, Farmington, Connecticut

This fall, a study looking at the link between night work and breast cancer concluded that shift workers are at a higher risk—possibly because late-night work disrupts the body's light-dark hormone cycles. In this hour, we'll talk about timing in medicine, and the connection between health, illness, and our body's rhythms.

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