Kai Hibbard, a former contestant on “The Biggest Loser,” spoke out about the NBC program stating that she is "embarrassed to have participated in" the reality show as it is a “fat-shaming disaster.” Hibbard lost 121 pounds after joining the show’s third season.

Hibbard claimed that the show was mentally and physically abusive to the contestants who were made to follow unhealthy diets, confined to their rooms and not allowed to speak to family members. The trainers sometimes ignored medical advice from doctors and forced contestants to work out for several hours, Hibbard told the New York Post in a recent interview. NBC responded to the claims saying that all the contestants on the show were properly monitored and supervised by experts in the field.

"Our contestants are closely monitored and medically supervised," a representative for the network told FOX411. "The consistent 'Biggest Loser' health transformations of over 300 contestants through sixteen seasons of the program speak for themselves."

Another contestant, who did not want to be named, told the New York Post that the excessive workouts affected the health of many on the show. "I thought I was going to die," the contestant reportedly said, adding: "I couldn't take any more."

Hibbard also reportedly said that the trainers did not follow doctors' prescriptions, which resulted in several health problems, adding that she was “brainwashed to believe that you're super-lucky to be there” because of which she did not leave the show. Hibbard said that she came forward now because she wanted people to know the truth.

"There’s a moral and ethical question here when you take people who are morbidly obese and work them out to the point where they vomit, all because it makes for good TV,” Hibbard reportedly said.