A nutrition scientist found that the reality show’s contestants’ metabolisms slowed after participating—and didn’t recover.
As noted in Food Intelligence: The Science of How Food Both Nourishes and Harms Us by Julia Belluz and Kevin Hall:
It was an unusual laboratory for a metabolism and weight loss study: a sprawling ranch, the former home of the Gillette razor-blade tycoon, nestled in the dusty green Santa Monica Mountains near Malibu, California.
The study took place during season eight of the reality TV program The Biggest Loser, where contestants were found to be tired six weeks in.
Author's summary: Contestants' metabolisms slowed after the show.