You might find this NYT piece on the winners of the Biggest Loser TV show interesting. Basically, "dieting" as a reduction in calories is a lose-lose game because your basal metabolic rate goes down so you have to keep eating less and less to keep it up.
Keeping up the basal metabolic rate is part of the rationale behind intermittent/extended fasting instead of pure calories-in-calories-out weightloss advice.
https://www.nytimes.com/2016/05/02/health/biggest-loser-weig...
Keeping up the basal metabolic rate is part of the rationale behind intermittent/extended fasting instead of pure calories-in-calories-out weightloss advice.