The dramatic transformations the competitors experienced during the show were inspiring, but since the show ended, some past winners have struggled.
In The Biggest Loser's inaugural season, champion Ryan Benson lost 122 pounds. In the four years since the show ended, Ryan has gained almost 100 pounds back.
During the third season, Erik Chopin started the competition weighing in at 407 pounds. Erik became the winner after losing a jaw-dropping 214 pounds in eight weeks. Two years after he was crowned the winner, Erik has gained back 72 pounds.
Are you struggling with weight loss? Get advice from The Biggest Loser's nutrition adviser, Dr. Michael Dansinger.