The Biggest Loser

seasons

1. Season 1 12 episodes · 2004
2. Season 2 12 episodes · 2005
3. Season 3 13 episodes · 2006
4. Season 4 15 episodes · 2007
5. Season 5 16 episodes · 2008
6. Season 6 14 episodes · 2008
7. Season 7 21 episodes · 2009
8. : second chances 13 episodes · 2009
9. Season 9 19 episodes · 2010
10. Season 10 13 episodes · 2010
11. Season 11 21 episodes · 2011
12. Season 12 13 episodes · 2011
13. Season 13 18 episodes · 2012
14. Season 14 12 episodes · 2013
15. Season 15 15 episodes · 2013
16. Season 16 18 episodes · 2014
17. Season 17 8 episodes · 2016
18. Season 18 10 episodes · 2020 · 4.0–4.0