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Mehmet Oz, M.D. & Michael Roizen, M.D.

Updated: December 28, 2010 6:50PM

Dr. Oz, 48, earned his undergraduate degree from Harvard, his M.D. from the University of Pennsylvania, and his M.B.A. from the Wharton School of Business. He is professor and vice chairman of surgery at Columbia University. His research interests include heart replacement surgery and health care policy. He and wife Lisa have four children.

Dr. Roizen, 62, is a graduate of Williams College and the University of California, San Francisco, School of Medicine. He is chief wellness officer and chair of the Wellness Institute of the Cleveland Clinic. He is the creator of the RealAge test, which determines your biological age, as opposed to your calendar age. He has received 12 U.S. patents. He and wife Nancy have two children.

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