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How Fat is Stored in our bodies

John Robert Cardillo

Many theories and outright nonsensical claims are put forward regarding what causes us to gain body fat and the quick fix (for a price) to lose this fat. The common answer we get from most “diet experts” is that, at any meal where a person consumes in excess of what the metabolism can use in a period of time extra calories beyond what is required by the body will be stored as body fat.

In order to be able to best advise people on what eating regimen they should follow, it is imperative that a diet and nutrition professional fully understand how the body metabolizes food. The science behind how the three macronutrients, when eaten in excess, will be stored as body fat is somewhat complicated. The fact is that understanding how our body has the ability to convert protein, carbohydrates and fats to body fat is important in order for us to make more rational choices when it comes to every morsel of food we put into our mouths.

The first step in succeeding in any endeavour is understanding the scope, context, variables and as many details as possible. The pages that follow are important to your understanding how fat is stored. 

About half of the adults in North America are overweight. That is 200 million people who have too much body fat. Many people exercise and go on diets to reduce the amount of their body fat. But have you ever wondered what that is? Person gets fat, gains weight, what is exactly happening inside the person’s body? 

How fat is stored:

How our body stores fat in our fat cells is a process that very few experts in nutrition fully understand. Many theories and outright nonsensical claims are put forward regarding what causes us to gain body fat and the quick fix (for a price) to lose this fat. The common answer we get from most “diet experts” is that, at any meal where a person consumes in excess of what the metabolism can use in a period of time extra calories beyond what is required by the body will be stored as body fat.

 In order to be able to best advise people on what eating regimen they should follow, it is imperative that a diet and nutrition professional fully understand how the body metabolizes food. The science behind how the three macronutrients, when eaten in excess, will be stored as body fat is somewhat complicated. The fact is that understanding how our body has the ability to convert protein, carbohydrates and fats to body fat is important in order for us to make more rational choices when it comes to every morsel of food we put into our mouths.

The first step in succeeding in any endeavour is understanding the scope, context, variables and as many details as possible. The pages that follow are important to your understanding how fat is stored. 

How fat cells work:

About half of the adults in North America are overweight. That is 200 million people who have too much body fat. Many people exercise and go on diets to reduce the amount of their body fat. But have you ever wondered what that is? Person gets fat, gains weight, what is exactly happening inside the person’s body

Fat cells: What are they and how do they function?

Fat cells are developed in our bodies during pregnancy and fetus in the 3rd trimester. More fat cells are developed during puberty when the sex hormones kick in. The amount of fat cells that we are born with does not increase during our lifetime. By overeating, the excess calories will be stored in our fat cells which can expand without limitation

Where is fat located?

Fat, referred to as apisode tissue can be found in several places in our body. Depneding on your genetic makeup, subcutaneous fat is found through our bodies just below our skin. Our kidneys may also have fat cells located on their upper upper part.

Our bodies contain two types of fat cells:

How fat enters your body

When you eat food that contains fat, which is mostly triglycerides. Breakdown of these fats first starts in our mouth by enzymes in the saliva. More fat breakdown occurs in the stomach and then continues in your intestines. There, the following happens:


  1. In the small intestine, the triglyceride (fat) droplets get mixed with bile salts produced by a process in the gall bladder called emulsification. This mixture breaks up the large droplets of triglycerides into smaller droplets called micelles. This break-up will increase the triglycerides’ surface area.

  2. The pancreas then releases/secretes am enzyme called Lipases that attack the surface of the micelles and break the triglycerides into monoglycerides and fatty acids. 

  3. The monoglycerides and fatty acids can then be absorbed into the cells lining the intestine.

  4. In the intestinal cells, the monoglycerides and fatty acids are recharged into fat (triglyceride) molecules created with a protein and known as chylomicrons. This protein coating makes the fat dissolve more easily in water.

  5. Chylomicrons are not able to directly go in the blood stream because they are too big to pass through the wall of the capillary. They are then released into the lymphatic system and are carried through the lymphatic vessel system to the thoracic duct which merges with the veins. At that point, the chylomicrons pass into the bloodstream.

  6. Chylomicrons travel through the bloodstream to the liver to make triglycerides and are packaged up as Lipoproteins and released into the bloodstream to be sent to fat cells for storage. 

  7. Lipoproteins in the bloodstream stimulate the pancreas to release insulin. Insulin stimulates an enzyme called Lipoprotein Lipase, which is found in the walls of blood vessels of fat cells. They break down the Lipoproteins into smaller fatty acids and monoglycerides. Then Insulin acts as a key to stimulate fat cells to open their door and allow the fatty acids and monoglycerides to enter the fat cells. In the fat cell, they are reassembled as tryglicerides and are stored as fat reserves, making us fatter. 

Of the three macronutrients, fats are the easiest to store in adipose cells, as they require minimum packaging to enter the fat cells, and the fat cells have infinite ability to enlarge to accommodate fat storage.

John Robert Cardillo Is a Canadian Bodybuilding Champion, Workout expert and Fitness Entrepreneur. Cardillo is regarded as a pioneer of Hi-Intensity training and developed the HIT3 workout system, and the proprietary SHREDDED NUTRITION diet program.

Cardillo is the founder of TRANSFORMATION MASTERY, an educational system that incorporates HIT3 workout system and SHREDDED NUTRITION diet.

For more information please visit www.johnrobertcardillo.com

 (meta description) John Cardillo, Canadian Body Building Champion introduces his renowned HIT3 workout plan, a component of his Transformation Mastery program. John Cardillo