I don't have the article in front of me, but I know that the reason Quivers went on the Master-Cleanse was her bowel problems. I read the article when it came out and bought the magazine, but I doubt I can find it again. I do know that she definitely did not go on it, and said this, for weight loss.
And I don't think 75 lbs overweight is considered "morbidly obese" unless you're supposed to weigh 75 lbs.