Rosie O'Donnell slammed Jay Leno and Bob Harper on Instagram after watching Netflix docuseries about "The Biggest Loser."

According to the new docuseries Fit for TV: The Reality of the Biggest Loser, Michaels allegedly worked with producers to restrict contestants' caloric intakes to dangerous levels, gave contestants caffeine pills, and prevented contestants from getting proper medical care.

Season 15 winner Rachel Frederickson lost nearly 60% of her body weight, shocking viewers and health experts at the time. Fit for TV: The Reality of The Biggest Loser, a documentary about the show's complicated legacy,

The former trainer on the weight loss bootcamp series hits back at claims made in a new Netflix docuseries, 'Fit for TV: The Reality of 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 ."

The Biggest Loser is back in the spotlight more than 20 years after it first premiered on NBC. In the new Netflix docuseries Fit for TV: The Reality of The Biggest Loser, former contestants and producers reveal the intense reality behind the success of the weight-loss reality show.

Famed 'Biggest Loser" personality Jillian Michaels acted like a drill sergeant on the hit show. Now, she's speaking out to Inside Edition about the new Netflix documentary, "Fit for TV: The Reality of the Biggest Loser.

The first-ever "Alien" TV series and a new spy thriller are also trending on streaming services this week. “ Fit for TV: The Reality of the Biggest Loser ” is the top TV show on Netflix right now, according to the streamer’s public ranking system.

Dr. Robert Huizenga fired back at Jillian Michaels ’ claims after she accused those involved in the new Netflix documentary, Fit for TV: The Reality of the Biggest Loser, of lying about the use of caffeine pills on the show.