Netflix’s new docuseries about "The Biggest Loser" revisits the controversial weight loss program's triumphs and missteps.

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

Netflix’s new documentary, “Fit for TV: The Reality of the Biggest Loser” just landed on the streamer and it pulls back the curtain on allegations made against producers and former cast members of NBC’s former series “The Biggest Loser.”

Season 17 winner Roberto Hernandez lost 140 pounds while competing on The Biggest Loser. Hernandez was the last winner from the show’s NBC run. Today, Hernandez is still a high school teacher. He loves being a family man to his four kids and a husband to his wife, Rosie.

The Biggest Loser became a cultural phenomenon when it premiered in 2004 — but the show has been plagued with scandals and controversy

David Broome, a co-creator of The Biggest Loser, says in the docuseries that he got the idea for the show after seeing a desperate “help wanted” ad for a personal trainer to “save my life” on a bulletin board outside of a gym. Once the show was underway, producers searched for similarly desperate contestants.

Danny Cahill tells Fox News Digital that "there are a lot of things that were left out." Cahill appears in the new Netflix documentary "Fit for TV: The Reality of the Biggest Loser."

NBC declined to continue The Biggest Loser past 17 seasons — and court documents filed by Huizenga and cited by DailyMail.com attribute the cancellation to Gwynn’s claims, detailed above — but the series returned for one more season on USA Network in 2020.