5 Steps to prevent Heart Disease

Tuesday, June 21, 2016

Is Yo-Yo dieting bad for you or is it excess number of fat cells?

Yo-yo dieting theory vs. Sponge Theory

as cause of easy weight regain in reduced obese.

Yo- Yo dieting is bad for you?

Below is from NEJM, link above

Frank Greenway writes about the new science validated in
The Biggest Loser experiment
excerpt below:

This is where Biggest Loser Experiment was published:

Abstract of Biggest Loser Experiment below


1-  Body Mass Index:48.7 ± 10.1 kg/m2

2-  Weight 144.9 ± 39.4 kg, and

3---Body Fat 49 ± 6% (mean ± SD)

During the first phase of the competition when the contestants were isolated in a boot camp environment,
the average rate of weight loss was 0.4 ± 0.1 kg/d and
 decreased to 0.19 ± 0.1 kg/d after returning home.

Total weight loss was 58.2 ± 26 kg with 
81.6 ± 8.4% coming from body fat. 

The computer simulations closely matched these data and calculated that average energy intake decreased by 65% during the first phase to 1300 kcal/d while participating in 3.1 h/d of vigorous exercise. 

After returning home, energy intake increased to 1900 kcal/d and vigorous exercise decreased to 1.1 h/d.

Simulation of diet alone resulted in 34 kg of weight loss with 65% coming from body fat,
whereas exercise alone resulted in a loss of 27 kg with 102% from fat.

"The Biggest Loser combined vigorous exercise with dietary restriction causing the participants to lose fat and preserve more lean tissue."

"The reduction in metabolic rate is proportional to the drop in Leptin and Leptin is correlated with the drop in body fat. " 

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