While some are wondering if Rachel Frederickson, winner of "The Biggest Loser," took the weight-loss journey too far, the trainers from the hit NBC show are refusing to comment about whether or not Frederickson's new weight is healthy.

After dropping more than half of her body fat, Frederickson weighed in at 105 pounds on the last episode of the hit show. But did the 155-pound drop make her too svelte?

Frederickson, 24, stands at 5'4". When she first started the show, she was a size 20 and weighed 260 pounds. When she left the ranch as a finalist, she was 150 pounds and went home to lose the rest of the extra weight. Months later when she came back Frederickson was another 45 pounds lighter and a size 0/2.

She went on to win the show and the $250,000 prize, but fans of the show couldn't help but wonder if she took it a little too far. "Executives honestly thought that maybe she'd look okay and that no one would notice," a source told People.com about the live finale, "but people gasped."

Celebrity trainers like Jillian Michaels, Bob Harper and Dolvett Quince wouldn't comment on appearance at the live finale of "The Biggest Loser."

Harper took to Facebook to express his views on the situation: "Jillian and I want to take a moment to congratulate all of the BL contestants on their hard work," he wrote on Wednesday. "We're not comfortable commenting on Rachel's journey because we weren't her trainers and weren't given an opportunity to work with her at any point. Any questions about the contestants on 'The Biggest Loser' should be directed to the show's producers."

Michaels' rep had a similar message. "Jillian Michaels will not comment on Rachel's journey as she was not her trainer. She is celebrating the at-home win of her contestant, Tumi. Any questions about any of the other contestants on the 'Biggest Loser' should be directed to the show's producers," the rep told People.

On Twitter, Michaels expressed to fans she "wasn't comfortable" to answer question about Frederickson's weight loss and like Harper, directed fans to the show's producers.