The Biggest Loser' is the subject of the 2025 Netflix docuseries 'Fit for TV: The Reality of the Biggest Loser'

The Biggest Loser became a cultural phenomenon when it premiered in 2004 — but the show has been plagued with scandals and controversy as well. When NBC introduced the show, it followed a group of people deemed overweight who would compete in a 30-week competition.

Each season of The Biggest Loser found contestants undergoing a 30-week boot camp led by a series of trainers — the most notable being Bob Harper and Jillian Michaels. Contestants were given workout and nutrition plans, and whoever lost the most weight by the end of the training period was awarded $250,000.

The Reality of ‘The Biggest Loser’ premiered on August 15, 2025, on Netflix. The three-part docuseries examines NBC’s The Biggest Loser, with all episodes released simultaneously.

The Reality of the Biggest Loser is on Netflix, find out why host Alison Sweeney left the show and what she does now.

A Season 8 contestant from The Biggest Loser says she “died” while filming the hit weight-loss competition — and she’s opening up about the harrowing ordeal in Netflix’s new docuseries Fit for TV: The Reality of The Biggest Loser.

I f you've seen Netflix's new documentary, Fit for TV: The Reality of The Biggest Loser, then you'll understand why everyone – like, literally, everyone – is talking about the series right now. And, if you haven't seen it,

Back when The Biggest Loser aired, I remember this push for “motivation.” The fact that what that motivation looked like was different for everyone didn’t really occur to anyone. There was just one way to do it,