The Biggest Loser


The Biggest Loser is a reality television format which started with the American TV show The Biggest Loser in 2004. The show centers on overweight and obese contestants attempting to lose the most weight; the winner receives a cash prize. There are different variations of The Biggest Loser around the world. Each country has made its own adaptation of the show; however, the contestants always have the same goal: to lose the highest percentage of weight to become the "biggest loser". There is no minimum or maximum weight limit for the show, but most males tend to weigh over or near 300 lb. Females tend to weigh over or near 200 lb.
In addition to individual contestants, some seasons in some international adaptations have featured couples or even whole families.

International versions


Country/RegionTitleTelevision networkWinnersPresentersTrainers-
Algeriaplainlist|
  • Season 1, 2019: Walid
  • Season 2, 2021–22: Rabah & Habiba
  • Season 3, 2025–26: TBA

    ''Biggest Loser'' records

;Heaviest contestant:
  • Male: Kevin Moore of The Biggest Loser Australia: The Next Generation and The Biggest Loser Australia: Challenge Australia ''The Biggest Loser Australia 9, weighed.
  • Female: Shay Sorrells of The Biggest Loser Second Chances weighed.
;Biggest weight loss:
  • Male: Alexander Repyanchuk of the Weighted and Happy 5 lost 60.13% of his total body weight
  • Female: Rachel Frederickson of The Biggest Loser 15'' of the American version lost 59.62% of her total body weight
;Other:
Jodie Prenger from series 2 of the British version was the first female biggest loser worldwide, losing 46.85% of her original body weight.

Fit for TV: The Reality of The Biggest Loser

On August 15, 2025, a three-part documentary series about The Biggest Loser aired on Netflix.

Other media

The Biggest Loser RunWalk is the official race series of The Biggest Loser. Dan and Jackie Evans from Season Five are the national spokespeople.
The Biggest Loser is a video game for Wii and Nintendo DS. It was released in North America on October 6, 2009 and Europe on November 13, 2009.
The Biggest Loser: Ultimate Workout is a video game for Xbox 360 which uses its Kinect camera. Developed by Blitz Games and published by THQ, it was released in North America on November 4, 2010 and Europe on November 10, 2010.
The Biggest Loser: Challenge is a video game for Wii released on November 4, 2010 in North America and November 12, 2010 in Europe.