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Why is it not easy for fat people to lose weight?

 Last Update: 2021-09-10
 Source: Internet
 Author: User

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Why is it not easy for fat people to lose weight? The reason is "heart-struck".

"Keep your mouth shut and open your legs" has always been regarded as the iron law of weight loss
.
But for some people, the effect of "stretching the legs" is very metaphysical: some people don't necessarily get thinner after exercising, and some people get fatter after exercising

A study published in "Contemporary Biology" on August 27 pointed out that due to the body's own "energy compensation" mechanism, exercise will reduce the level of basal metabolism to a certain extent, thereby greatly reducing the fat burning effect of exercise
.

For people who are obese, this discount is even harder (nearly 50% off)
.
This may explain why fatter people are more difficult to lose weight successfully through exercise

The cruel truth: It's hard for fat people to exercise to lose weight!

"A cruel twist: exercise reduces calories burned at rest in individuals with obesity"

Professor John Spikeman used such an eye-catching title when introducing this result
.

He is a chair professor of the School of Pharmacy, Shenzhen University of Technology (under preparation), Chinese Academy of Sciences, and the chief scientist of the Energy Metabolism and Reproductive Research Center of the Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences.
The relationship with obesity
.

This study collected and analyzed data from 1,754 adults through the International Atomic Energy Agency (IAEA) Double Standard Water Database
.
The BMI (body mass index) of these people ranges from 12.

5 to 61.

The BMI index is a commonly used international standard to measure the degree of body weight and health
.
Generally speaking, when the BMI index is between 20 and 25, it is a normal value, more than 25 is overweight, and more than 30 is obese

Studies have found that about half of the calories burned by obese people (higher BMI) during exercise are "offset" because their resting metabolism has actually been reduced by 49% after exercise
.
In contrast, individuals with normal BMI only have 28% of their exercise energy "offset"

Specifically, when an obese person consumes 100 calories through exercise, his resting metabolism will decrease by 49 calories, so his total energy expenditure only increases by 51 calories; while a person who is not fat consumes 100 calories for every exercise , Its total energy expenditure will increase by 72 calories
.

That is to say: Compared with people who are not fat, the weight loss effect of obese people is worse!

"This is a cruel conclusion for obese people
.
" Even Spikeman, the co-corresponding author of the paper, couldn't help feeling so

Reading Energy Compensation: Is There Any Hope for Weight Loss?

In this work, the researchers conducted a stratified study on BMI values and found that fat people have a greater compensation effect than thin people
.
In order to further clarify the role of obesity in it

"There are two possible reasons for the compensation effect.
One is that exercise increases appetite and leads to eating more, and the other is that exercise reduces energy expenditure in other aspects of the body, such as resting metabolism.
Energy costs are reduced
.
” Spikeman said

Professor Louis Halsey of the University of Roehampton in the UK who participated in the study concluded: “All parts of the world tend to recommend exercise and diet to reduce 500-600 calories to achieve the effect of weight loss
.
However, they did not consider it.
The reduction in calories burned to maintain the basic functions of the human body is caused by the body in order to compensate for the calories burned by exercise
.
"

Although it is a "heart-struck" study, the paper points out a promising path: Now that everyone has discovered that various weight-loss plans and emerging weight-loss fashions rarely bring long-term and substantial results.
Weight changes, then we might as well make the necessary revisions to public health strategies related to weight loss
.
As scientists deepen their understanding of the energy metabolism mechanisms of various groups of people, it is hoped that in the future, like "precision medicine", combining the genetic tendencies of different individuals with energy compensation to create a personalized exercise weight loss plan
.
(Source: China Science News, Diao Wenhui and Li Chenyang)

Related paper information: https://doi.
org/10.
1016/j.
cub.
2021.
08.
016

https://doi.
org/10.
1016/j.
cub.
2021.
08.
016

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