Metabolism and Body Weight
We burn calories to live and the total consumed energy is distributed as follows:Food Processing. The digestion, absorption, transportation and storage of food products also requires energy and this is believed to be about 10% of the total calories taken in. Similarly, we cannot influence this line in the Energy Usage column.Physical Activity. This is a different story as it is where we can directly affect the level of calories used. All physical activity burns calories whether it is walking, jogging, swimming, dancing or whatever. Obviously the more activity done or the greater intensity then the more calories get burned but the beauty of this is our ability to both monitor this flow of energy and plan it. It was stated above that the level of basal metabolism is a constant for each of us but it is different for all individuals and this is influenced by:Body Size and Structure. A heavier person has a higher level of BM. This is all the more pronounced if he has a well developed musculature - as the muscles even at rest burn more calories than fat. A simple conclusion lies here for all: replace part of the fat by muscles and you will be happier!Gender. An average man burns more energy than an average woman of the same age which is again due to greater musculature.Age. In the process of aging, our musculature is weakened, which leads to the reduction of the BM. It has to be noted that this process can be actively and successfully resisted. I would like to share with you my beliefs that good nutrition can also affect the activation BM by restoring a favorable body relationship of glucose and insulin. But this is a subject for another discussion. While our capabilities to affect the BM level are limited, increasing daily physical activities, enhancing the development of muscle tissue, and eating right foods, we can change a lot for the better.The conclusion is very simple - we must learn to burn more calories than we get from food. We should burn more calories or consume less, and both ways will bring results! Doing both will have a dramatic effect! 
The various chemical reactions constantly going on in a human body are collectively called the process of metabolism and we will now look at this to determine how this is related to our weight.
The simplistic description of this process is: food and water coming into the body are processed and absorbed in the gastro-intestinal tract. The nutrients are then absorbed into the blood which distributes them to the cells, where the body converts them into the release of energy. Unused substances take the reverse route, from cells to blood, and then leave the body. It is a common conception that slim people have fast metabolism, and fat people - slow. While there is a connection between the rate of metabolism and body weight this cannot be used as the sole excuse for overweight. In the final analysis body weights depends on the balance between calories into the body and their usage in the release of energy. An excess intake of calories beyond their usage leads to weight increase and of course vice versa. Just like a motor our metabolism is the complex biochemical process which burns or converts the calories from carbohydrates, fats and proteins into the energy for life.We burn calories to live and the total consumed energy is distributed as follows:Food Processing. The digestion, absorption, transportation and storage of food products also requires energy and this is believed to be about 10% of the total calories taken in. Similarly, we cannot influence this line in the Energy Usage column.Physical Activity. This is a different story as it is where we can directly affect the level of calories used. All physical activity burns calories whether it is walking, jogging, swimming, dancing or whatever. Obviously the more activity done or the greater intensity then the more calories get burned but the beauty of this is our ability to both monitor this flow of energy and plan it. It was stated above that the level of basal metabolism is a constant for each of us but it is different for all individuals and this is influenced by:Body Size and Structure. A heavier person has a higher level of BM. This is all the more pronounced if he has a well developed musculature - as the muscles even at rest burn more calories than fat. A simple conclusion lies here for all: replace part of the fat by muscles and you will be happier!Gender. An average man burns more energy than an average woman of the same age which is again due to greater musculature.Age. In the process of aging, our musculature is weakened, which leads to the reduction of the BM. It has to be noted that this process can be actively and successfully resisted. I would like to share with you my beliefs that good nutrition can also affect the activation BM by restoring a favorable body relationship of glucose and insulin. But this is a subject for another discussion. While our capabilities to affect the BM level are limited, increasing daily physical activities, enhancing the development of muscle tissue, and eating right foods, we can change a lot for the better.The conclusion is very simple - we must learn to burn more calories than we get from food. We should burn more calories or consume less, and both ways will bring results! Doing both will have a dramatic effect!
Jan Filler, Dr. Med., graduated from Riga Medical Institute in 1971.
After graduating from the internship, he received his degree in anesthesiology and intensive care. He worked in the intensive care center of Riga City Hospital for Infectious Diseases.
Later he worked in the Latvian gepatologic center of Riga Medical Institute. He defended his thesis on the problem of alcoholic liver lesions. Received a degree of Doctor of Medicine.
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