Biggest Loser star Jillian Michaels hits back at critics Jillian Michaels has taken to social media to launch a staunch defence of her behaviour. 21 August 2025 Jillian Michaels has rubbished allegations made against her on Fit for TV: The Reality of the Biggest Loser. Jillian Michaels has hit back at her critics The 51-year-old fitness trainer previously starred on The Biggest Loser, the NBC reality series that featured overweight contestants striving to lose weight in order to win a cash prize, and Jillian has now rubbished a series of claims made about her on Netflix's Fit for TV, which tel...