Season 5's Ali Vincent was the first woman to win the weight-loss competition. She slimmed down to 124 from her starting weight of 234, a journey she reflected on in her book, "Believe It, Be It: How Being The Biggest Loser Won Me Back My Life." In April 2016 she revealed that she had gained back almost all the weight.
Roberto Hernandez and his twin brother, Luis Hernandez won season 17. Roberto shed the most weight, going from 348 pounds to 188.
Season 16 Toma Dobrosavljevic took the scale by losing just one pound more than his closest competitor. He shed 171 punds off of his beginning weight of 336.
When "The Biggest Loser" contestant Rachel Frederickson showed just how much weight she lost on the NBC competition in season 15 -- 155 pounds, to be exact -- not everyone was impressed. A number of viewers expressed concern that she had become "too skinny," although Frederickson said that she feels fine.
Dannielle "Danni" Allen won season 14 of "The Biggest Loser" in 2013. She entered the competition at 258 pounds, and by the end of it she was down to 137.
Season 13 champ Jeremy Britt lost an astonishing 199 pounds from a high of 389, effectively shedding more than half of his body weight during the 2012 competition. His weight loss was actually a family affair: his sister Conda competed with him and lost 115 pounds along the way, and his effort inspired his mom to lose 50 pounds as well.
John Rhode sealed the win in 2011 by ending the season 220 pounds lighter. Rhode entered the competition weighing 445 pounds, and after working with trainer Bob Harper he had lost nearly half of his body weight.
Olivia Ward lost 129 pounds after competing in the 11th season of "The Biggest Loser," which not only helped her feel healthier but also put her in first place. "It was the most life-changing experience I have ever had the privilege of going through,"
she said after her win.
Patrick House began season 10 of the competition at 400 pounds. By the time he'd sweated through to the end, he had lost 181 pounds and gained a book deal. "As Big as a House: How One Biggest Loser Took A Look at Himself and Made the Change of a Lifetime" was published in 2012.
Season 9's Mike Ventrella inspired viewers everywhere when he dropped from 526 pounds to 262. Not surprisingly, one of the first things Ventrella needed to do after he won the $250,000 prize was go shopping for new clothes.
Charles Daniel Cahill claimed the season 8 title by shedding 239 pounds. He began the competition at 430 and walked away from it weighing 191.
Season 7 star Helen Phillips worked her way from 257 pounds to a finale weight of 119. After she won,
Phillips treated her husband to a Las Vegas vacation and relished feeling confident enough to wear "a cute bathing suit, strutting my stuff!"
Michelle Aguilar's 100-pound weight loss on season 6 of "The Biggest Loser" was more than just a physical change. "Not only did it show me that I was capable of more than I believed I was, but it also helped me to truly find myself,"
she said. "I learned to change from the inside out."
Bill Germanakos helped set the standard for what it means to be "The Biggest Loser" when he lost 164 pounds in season 4. Bill signed up for the show with his twin brother, Jim, who also lost a massive amount of weight thanks to the show. Although Jim was eliminated, he kept up at home and dropped 185 pounds.
Season 3 champion Erik Chopin walked away $250,000 richer thanks to the 214 pounds he lost. "Nothing could stop me from reaching my goal,"
Chopin said. "I felt like (winning) was my destiny."
Matt Hoover's 157-pound weight loss propelled him to "Biggest Loser" status during the show's second season. He walked away with more than just $250,000, though:
Hoover wound up marrying his competitor, Suzy, in 2006.
The first "Biggest Loser," Ryan Benson, dropped down to 208 after entering the competition weighing 330 pounds.
In his Twitter bio, he said that he's "gained some of the weight back, but have maintained my boyish good looks and cat like agility."