Future competitors on The Biggest Loser won't have the urgent voice of Jillian Michaels spurring them on any longer. The trainer has announced that she will be leaving the series when her contract expires, which occurs following the new season that begins in January.
Michaels made this announcement on Twitter, adding that her replacement has already been chosen, and that she will help to introduce the newcomer over the course of Season 11. There's also the possibility that this decision isn't final-final, as Michaels left the series before for one season, back when The Biggest Loser aired just once a year. She specified only that she wanted to leave TV for one year to "focus on becoming a mommy and doing more charity work."
Michaels got her own series this past summer, Losing It With Jillian, and she said that her experiences on that show, which brought her into the homes of individual families with health and diet issues, helped inspire her decision to leave The Biggest Loser. "Living with kids, I saw firsthand what I was missing," she said.
The 36-year-old Michaels does not currently have children, and has said in the past that adoption would likely be the choice for her due to health issues that would make pregnancy difficult.