In the 17 seasons of The Biggest Loser, audiences have actually enjoyed individuals considerably alter their bodies through strenuous workout and dieting. That weight-loss isn’t really sustainable, inning accordance with a brand-new research study of 14 participants from the programs 8th season, due to the fact that their metabolic process decrease and never ever recuperate.

The research study, released in Obesity on Tuesday, discovered that 13 of the 14 individuals restored a few of the weight back and 4 acquired back exactly what they lost plus more, People.com reported . At the start of the competitors, the participants began with a typical resting metabolic process. As they dieted and worked out to shed pounds rapidly, their metabolic process rapidly decreased. The candidates with the greatest weight reduction likewise experienced the best slowing down of their metabolic process.

“It is fantastic and frightening,” among the scientists, Dr. Kevin Hall of the National Institute of Diabetes and Digestive and Kidney Diseases, informed The New York Times . “I am simply blown away.”

One candidate, Erinn Egbert, who went from 263 pounds to about 176 pounds on the program, had the ability to deflect the weight and now weighs even less, in between 152 pounds and 157 pounds. She too has a hard time with a sluggish metabolic process that burns 552 less calories a day than is regular for somebody her size.

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