The Biggest Loser 'The Biggest Loser' Season 17 cast, premiere and format revealed by NBC 12/02/2015 The Biggest Loser's seventeenth-season cast and premiere date have been revealed by NBC as well as the series' new host, theme and format. Read More RELATED NEWS 'The Biggest Loser: Temptation Nation' premiere to feature "health or wealth" temptations and return of trainer Jessie Pavelka'The Biggest Loser' Season 17 cast, premiere and format revealed by NBC'The Biggest Loser's longtime trainer Bob Harper will host Season 17 TAGS: The Biggest Loser Survivor The Voice Bob Harper Richard Hatch Ben Silverman
