Shocking Findings From ‘The Biggest Loser’ Contestants

Shocking Findings From ‘The Biggest Loser’ Contestants

A nutrition scientist found that the reality show’s contestants’ metabolisms slowed after participating—and didn’t recover.

According to an excerpt from 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.

A group of people milled about a hallway in the ranch’s white, Spanish Colonial-style mansion early one morning before breakfast—­ and they were not exactly chipper. Six weeks into season eight of the reality TV program The Biggest Loser, the contestants were tired.

Author's summary: Study reveals slowed metabolisms in Biggest Loser contestants.

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Science Friday Science Friday — 2025-10-14

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