Biomechanology of Weight Gain, Weight Loss, and Body Mass Distribution

Musculoskeletal Profile of Normal Weight and Obese People

First published in 2011 - Last edited in May 2022 by Luka Tunjic. © All rights reserved.

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Differences in the Shape of Musculoskeletal System between Lean and Obese People

Theories of weight gain and weight loss based on calories, energy balance, genetics, insulin resistance etc. make it impossible to see things that are in front of our eyes.

Until now in regard to obesity, everyone has seen only pictures portraying obese people eating. It doesn’t matter how these pictures have nothing to do with reality, everyone still likes to see only pictures of obese people eating.

The first impression is that: the more a person is affected by excessive body weight, the more they are affected by an excessive inward curvature of the lumbar spine, an excessive outward curvature of the thoracic spine and excessive inward curvature of the cervical spine.

The reality is; that the more a person is affected by an excessive inward curvature of the lumbar spine, an excessive outward curvature of the thoracic spine and excessive inward curvature of the cervical spine the more they are affected by excessive body weight.

The graphic illustrations on this web page are to point out the things that are in front of our eyes. The first essential step to understanding weight gain/weight loss, obesity, underweight etc. is to see things that are in front of our eyes.


“The hardest thing to see is what is in front of your eyes.” - Johann Wolfgang Von Goethe (1749 –1832)

Adverse Musculoskeletal Changes and Weight Gain

Every single person affected by obesity is at the same time affected by adverse musculoskeletal changes.

Reversal of unnatural musculoskeletal changes is an essential factor in reversing obesity.

Every person, whether it is a child or an adult that is affected by overweight or obesity, has an increased rib cage circumference. (They also have an excessively rounded shape of the chest).

Children and adults of normal weight or underweight have a normal shape of the chest.

There is no child or adult that is affected by obesity that hasn’t been affected by an unnatural round shape of the chest.

It is wrong to believe that poor posture is caused by obesity. In reality, obesity is caused by poor posture (standing, walking and sitting posture) and poor walking and running gait.

  1. Excessive weight gain (obesity or overweight) is a symptom of adverse musculoskeletal changes and poor walking and running gait.

  2. Adverse musculoskeletal changes are symptoms of poor posture (standing, walking and sitting posture) and poor walking and running gait.

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