The media mogul had a weight loss special dubbed Shame, blame and the weight loss revolution, which aired on ABC, a show which has been described as taking over the airwaves on Monday night.
"I wanted to do this special for the more than 100 million people in the United States and the over 1 billion people around the world who are living with obesity, maybe that's you or maybe that's somebody you love," Oprah said at the start of the programme.