Oprah Winfrey is a self-serving witch. One of the most powerful women in America she dictates her opinions as faultless truths to an audience of 14 million viewers per day.
She panders to her audience's biggest fears and perverse curiosity to maintain her ratings. Sadly I fear most of her audience are incapable of or willing to discover the truth for themselves.
To quote E-Online, "If Oprah told American women to run naked through the mall, they'd do it".
http://www.stardoll.com/en/dolls/559/Oprah_Winfrey.html