Netflix’s newest docuseries interviews cast, crew, and contestants on how a reality show about weight loss changed their lives.

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.”

Rosie O'Donnell is never one to hold back. In an Aug. 19 Instagram post, she called out fellow TV icon Jay Leno for a mean-spirited 2009 segment from "The Tonight Show with Jay Leno," which was revisited in the new Netflix docuseries " Fit for TV: The Reality of the Biggest Loser ."

Robert Huizenga spoke about his experience on 'The Biggest Loser' on the Netflix docuseries 'Fit for TV: The Reality of The Biggest Loser'

The Reality of The Biggest Loser, is shining a bright light on the old weight-loss show, and it’s not looking pretty.

Alison Sweeney hosted The Biggest Loser for eight years before leaving the long-running weight loss game show after its 16th season in 2015.

Rachel Frederickson became famous after winning Season 15 of The Biggest Loser in 2014. Her dramatic weight loss, from 260 lbs to 105 lbs, gained both admiration and backlash. Now that Netflix’s new documentary Fit for TV: The Reality of The Biggest Loser is streaming,

For those unfamiliar with The Biggest Loser, the American show challenged obese or overweight contestants to go head-to-head in a bid to lose the highest percentage of weight over a period of 30 weeks. The winner would then receive an impressive cash prize.