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NEW YORK, NY - FEBRUARY 15:  Dr. Oz attends the 2012 "Woman's Day" Red Dress Awards at Jazz at Lincoln Center on February 15, 2012 in New York City.  (Photo by Brad Barket/Getty Images)
NEW YORK, NY - FEBRUARY 15:  Dr. Oz attends the 2012 "Woman's Day" Red Dress Awards at Jazz at Lincoln Center on February 15, 2012 in New York City.  (Photo by Brad Barket/Getty Images)

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Dr. Katz on Dr. Oz: 'There is no proof of net harm'

Perhaps America's best known personality in the medical field, Dr. Mehmet Oz is defending himself against critics accusing him of "promoting quack treatments."

Dr. Katz on Dr. Oz: 'There is no proof of net harm'

Perhaps America's best known personality in the medical field, Dr. Mehmet Oz is defending himself against critics accusing him of "promoting quack treatments."