Did 'Biggest Loser' Rachel Frederickson lose too much weight?

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Biggest Loser Rachel Frederickson
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Did 'Biggest Loser' Rachel Frederickson lose too much weight?
THE BIGGEST LOSER -- 'Live Finale' Episode 1515 -- Pictured: Rachel Frederickson -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE BIGGEST LOSER -- 'Live Finale' Episode 1515 -- Pictured: (l-r) Rachel Frederickson, Dolvett Quince -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE BIGGEST LOSER -- 'Live Finale' Episode 1515 -- Pictured: (l-r) Alison Sweeney, Rachel Frederickson, Dolvett Quince -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE BIGGEST LOSER -- 'Live Finale' Episode 1515 -- Pictured: (l-r) Rachel Frederickson, David Brown, Jay Sheets, Bobby Saleem, Alison Sweeney -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE BIGGEST LOSER -- 'Live Finale' Episode 1515 -- Pictured: (l-r) Rachel Frederickson, David Brown, Bobby Saleem, Alison Sweeney -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE BIGGEST LOSER -- Episode 1513 -- Pictured: (l-r) Tim Gunn, Rachel Frederickson -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE BIGGEST LOSER -- Episode 1513 -- Pictured: (l-r) Tim Gunn, Rachel Frederickson -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE BIGGEST LOSER -- Episode 1506 -- Pictured: Rachel Frederickson -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE BIGGEST LOSER -- Episode 1505 -- Pictured: Rachel Frederickson -- (Photo by: Tyler Golden/NBC)
THE BIGGEST LOSER -- Episode 1506 -- Pictured: (l-r) Tumi Ogundala, Marie Pearl, Jennifer Messer, Rachel Frederickson, David Brown, Ruben Studdard, Tanya Winfield -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE BIGGEST LOSER -- Episode 1501 -- Pictured: (l-r) Dolvett Quince, Rachel Frederickson -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE BIGGEST LOSER -- Episode 1502 -- Pictured: (l-r) Tanya Winfield, Rachel Frederickson, David Brown, Jennifer Messer, Ruben Studdard -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE BIGGEST LOSER -- Episode 1514 -- Pictured: (l-r) David Brown, Rachel Frederickson, Bobby Saleem -- (Photo by: Justin Lubin/NBC/NBCU Photo Bank via Getty Images)
THE BIGGEST LOSER -- 'Live Finale' Episode 1515 -- Pictured: Rachel Frederickson -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE BIGGEST LOSER -- 'Live Finale' Episode 1515 -- Pictured: Rachel Frederickson -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE BIGGEST LOSER -- Episode 1513 -- Pictured: Rachel Frederickson -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE BIGGEST LOSER -- 'Live Finale' Episode 1515 -- Pictured: Rachel Frederickson -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE BIGGEST LOSER -- 'Live Finale' Episode 1515 -- Pictured: (l-r) Rachel Frederickson, David Brown, Jay Sheets, Bobby Saleem, Alison Sweeney -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
This Feb. 4, 2014 photo released by NBC shows Rachel Frederickson on the finale of "The Biggest Loser," in Los Angeles. Fredrickson lost nearly 60 percent of her body weight to win the latest season of “The Biggest Loser” and pocket $250,000. A day after her grand unveiling on NBC, she faced a firestorm of criticism in social media from people who said she went too far. (AP Photo/NBC, Trae Patton)
This Feb. 4, 2014 photo released by NBC shows, from left, Rachel Frederickson, David Brown, Bobby Saleem, and host Alison Sweeney on the finale of "The Biggest Loser," in Los Angeles. Fredrickson lost nearly 60 percent of her body weight to win the latest season of “The Biggest Loser” and pocket $250,000. A day after her grand unveiling on NBC, she faced a firestorm of criticism in social media from people who said she went too far. (AP Photo/NBC, Trae Patton)
This image released by NBC shows contestant Rachel Frederickson during the first episode of "The Biggest Loser." Fredrickson lost nearly 60 percent of her body weight to win the latest season of “The Biggest Loser” and pocket $250,000. A day after her grand unveiling on NBC, she faced a firestorm of criticism in social media from people who said she went too far. (AP Photo/NBC, Trae Patton)
This Feb. 4, 2014 photo released by NBC shows Rachel Frederickson on the finale of "The Biggest Loser," in Los Angeles. Fredrickson lost nearly 60 percent of her body weight to win the latest season of “The Biggest Loser” and pocket $250,000. A day after her grand unveiling on NBC, she faced a firestorm of criticism in social media from people who said she went too far. (AP Photo/NBC, Trae Patton)
This image released by NBC shows contestant Rachel Frederickson from "The Biggest Loser." Fredrickson lost nearly 60 percent of her body weight to win the latest season of “The Biggest Loser” and pocket $250,000. A day after her grand unveiling on NBC, she faced a firestorm of criticism in social media from people who said she went too far. (AP Photo/NBC, Trae Patton)
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"The Biggest Loser" crowned its latest champion on the season 15 finale -- and it all came down to Rachel Frederickson vs. David Brown.

Yep, 24-year-old Rachel lost an amazing 155 lbs. since starting the show. That's almost 60 percent of her body weight: she went from 260 lbs. to 105. But she gained $250,000 in prize money.

The 'Today' show blog notes Rachel's win was record-breaking -- she lost a higher percentage of weight than any other contestant in the history of the show.

And while fans were excited for her big win -- some bloggers were concerned that Rachel dropped too much weight. EW said she looked "skinny-skinny," even by Hollywood standards.

BuddyTV was concerned, too: "Rachel has been such an inspiration and athlete all season. As soon as she is revealed, I can't help but think she looks way too thin, right? I don't know ... she just seems to have taken her competitive nature way too far."

And E! found that at 5'4", Rachel was underweight. According to Weight Watchers, the healthy weight range for Rachel's height is between 117 lbs. and 146.

'Biggest Loser' Finale's Record-Breaking Win
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