The Biggest Loser is reportedly changing up its rules after Rachel Frederickson, who won Season 15 last week, became the smallest biggest loser in the history of the NBC reality show.

Rachel, 24, started the season at 260 pounds and lost 110 pounds while at the competition's ranch. Then, after heading home, she lost 45 more pounds, weighing in during the live season finale on February 4 at only 105 pounds.

Given her 5'4" height, that puts the Los Angeles voiceover artist's body mass index at 18.0, which makes her the first Biggest Loser winner to be in the National Institute of Health's "underweight" range.

Now, sources tell E! Online that the show's producers are mulling over "small but significant tweaks" to its production in response to the controversy around Rachel's dramatic weight loss — such as strategies to monitor contestants more closely after the filming of the last episode.

Meanwhile, Dolvett Quince, who was Rachel's trainer, defended her and the show on Facebook: "Biggest Loser is a journey which has its ups and downs. Please try not to look at one slice of Rachel's journey and come to broad conclusions. Rachel's health is, and always has been, my main concern and her journey to good health has not yet ended!"

Granted, the title Healthiest Loser doesn't have the same ring to it, but maybe that's the change the show needs!

Source: E! Online