‘Biggest Loser’ Doctor Fires Back After Jillian Michaels’ Netflix Allegations originally appeared on Parade.
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.
Huizenga, the physician on the set of The Biggest Loser, said that caffeine, weight-loss pills and diuretics were strictly banned from the start, and that whenever contestants claimed they had been given such pills, he ordered production to shut down and investigate, according to an article from TMZ published on Tuesday, August 19. He also added that the apology Michaels gave after she was caught distributing her own brand of products proves that her claims about the use of caffeine pills were flimsy.
A representative for Michaels did not immediately respond to Parade’s request for comment.
Fit for TV: The Reality of the Biggest Loser premiered on Netflix on August 15, and the documentary showed Michaels giving contestants caffeine pills despite it allegedly being against the rules. Danny Cahill, the winner of season 8, also spoke about his experience on the show and claimed he was given Stackers, an energy supplement popular in the early 2000s.
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“At some point I was given Stackers, like a caffeine pill, you’re allowed one of these a day, but they were approved by the trainer,” Cahill told the cameras. “I took it as I decided, ‘Hey, caffeine will probably help me in a workout.’ Sometimes you’re tempted to do things that maybe you shouldn’t do.”
Just hours before Huzienga spoke with TMZ, Michaels slammed him, the documentary, her fellow coach Bob Harper and Netflix.
“This is one email of many that shows: Dr. Huizenga did approve caffeine pills on many seasons of Biggest Loser,” Michaels captions a carousel of screenshots of emails and text messages shared via Instagram on August 19.
The fitness trainer claimed that Harper “not only knew about the caffeine pills, [but] the ‘stackers fat burner’ were actually his suggestion” and said that she wanted to “use my brand instead because they were cleaner and had no more than 200mg of caffeine (equivalent to a strong cup of coffee).”
Michaels concluded by saying that caffeine was “NEVER banned on The Biggest Loser,” and that she thought it was “wild how some folks still lie like it’s 1985 before texts and email were a thing.”
Fit for TV: The Reality of the Biggest Loser is currently streaming on Netflix.
‘Biggest Loser’ Doctor Fires Back After Jillian Michaels’ Netflix Allegations first appeared on Parade on Aug 20, 2025
This story was originally reported by Parade on Aug 20, 2025, where it first appeared.
‘ The preceding article may include information circulated by third parties ’
‘ Some details of this article were extracted from the following source www.yahoo.com ’














