Dr. Roizen has authored and coauthored 4 #1 New York Times best sellers: the YOU Series. His writings include Real Age and "YOU: Having a Baby: The Owner's Manual." As chief medical consultant to "The Dr. Oz. Show," Dr. Roizen is a regular guest as "The Enforcer." has appeared on "The Oprah Winfrey Show," "The Today Show," "20/20," CBN, CNN, CBS, "Good Morning America" and hosted five PBS fundraising specials. He is also a member of the Ladies Home Journal medical advisory board, a group of health experts who are able to explain complex medical topics in an easy-to-understand way.