Nutrition is the main source of filling the body with the necessary elements. The principles of healthy human nutrition involve daily consumption of a certain amount of proteins, fats, carbohydrates, trace elements and vitamins. We replenish all these components daily, taking food. Since food is the basis of the life of the body, Special attention it is worth paying attention to their quality, as well as the mode of eating.

Experts distinguish several types of nutrition - rational and dietary.

Fundamentals of rational human nutrition it is a healthy, balanced, daily human meal, at a certain time with the maximum regulated amount of essential nutrients.

correct diet food - nutrition of a person with any deviations from normal operation organism. Such nutrition is compiled in such a way as to maximally support and “unload” a diseased organ or system of the human body.

Now let's take a closer look at the power components.

Squirrels- the main "building" element of the human body. Thanks to emu, new cells are formed, and it is also actively involved in metabolism. For normal life, a person needs to consume about 100-120 gr. protein per day.

Fats- the main source of energy in the human body. This element contains saturated and unsaturated fatty acid, lecithin, as well as vitamins A, B and E. Fats are also divided depending on their origin into animal and vegetable. A person needs to consume 100-150 grams per day. fats, keeping the balance that 70% of them should be of animal and 30% of plant origin.

Carbohydrates are also a source of energy for the human body. In combination with proteins, they contribute to the formation of hormones and enzymes necessary for the normal functioning of the body. On average, you need to consume about 400-500 grams per day. carbohydrates.

All this must be taken into account in order to understand human diet per day(on the nutrition of pregnant women a separate conversation). balanced diet and adherence to the diet, the human body regularly receives the necessary amount of nutrients, which is necessary for the normal growth, development and functioning of all organs and systems of the human body.

Human activity is associated with the expenditure of energy. Its amount is measured in calories. For normal life, it is necessary to constantly replenish the body with energy that enters it in the form of food.

The daily calorie intake depends on the gender, type of activity and age of the person. For example, men need more energy per day than women. And active young people who are still growing and developing spend more calories daily compared to adults.

Daily calorie intake for men

For active men

• under 30: 3,000 calories;
• from 30 to 50 years: within 2800 - 3000 calories;
• over 51: 2800 - 2400 calories.

For men with a sedentary lifestyle

• under 30: 2400 calories;
• 31 to 50 years old: 2200 calories;
• after 51 years, 2000 calories per day is enough.

For men with a moderate lifestyle

• 19-30 years old: 2600 - 2800 calories;
• 31-50 years old: 2400 - 2600 calories;
• from 51 years old: 2200 - 2400 calories.

daily calorie intake for women

For moderately active women

• up to 25 years, it is enough to consume 2200 calories per day for the normal functioning of their body;
• in 25-50 years, the recommended daily allowance is 2200 calories
• Over 51: Just 1,800 calories is enough.

With a sedentary lifestyle

• young girls under 25 years old will be enough for 2000 calories;
• women from 26 to 50 years old optimally consume no more than 1800 calories;
• after 51 years, you need to reduce your intake to 1600 calories.

With an active lifestyle

• young women 19 - 30 years old can consume 2400 calories;
• women in adulthood 31 - 60 years old need 2200 calories;
• women over 61 are recommended a daily allowance of 2,000 calories.

Individual calculation of the daily calorie intake

The above daily calorie intake values ​​are generalized and approximate. But each person is individual and has his own height, weight, muscle mass and degree of activity. Therefore, scientists have derived formulas that allow you to calculate the daily calorie intake for different people.

Calories are calculated first necessary for a person in a state of complete inactivity and at a comfortable temperature. In other words, first of all, you need to find out how much energy the body needs to function. internal organs without physical and emotional stress. Usually this indicator in the laboratory is measured in a supine position and in the absence of violent emotions. To measure it at home, formulas were derived for determining the value of basal metabolism (BMO).

Formulas for calculating BOO

• For men :

66 + (13.7 x weight in kg) + (5 x height in cm) - (6.8 x age in years)

• For women :

655 + (9.6 x weight in kg) + (1.8 x height in cm) - (4.7 x age in years)

For example:

For a 39-year-old woman weighing 70 kg and 168 cm tall, the BVR is calculated as follows:

655 + (9.6 * 70) + (1.8 * 168) - (4.7 * 39) = 1446.1 calories

Formula for Calculating Daily Calorie Need (DCA)

SPK = activity factor x BRO

Determining the activity factor value

• 1.2 - with a lifestyle without physical exertion;
• 1.375 - with light physical labor;
• 1.55 - with medium, moderate physical exertion;
• 1.75 - with heavy physical exertion;
• 1.9 - with especially hard physical labor.

For example:

With BOO = 1446.1 and with average activity (we take a coefficient of 1.55), the daily norm is determined as follows:

SPK \u003d 1446.1 * 1.55 \u003d 2241.46 calories

It is convenient to use a calorie calculator to calculate the daily allowance.

Daily calorie intake for weight loss

Knowing your SEC value, you can solve the problem of being overweight. To do this, you just need to reduce the energy intake into the body with food. So you can create a calorie deficit, which will lead the body to the need to use up its reserves - fat.

To what extent is it safe to cut calories for weight loss? This is very important question, because with an incorrectly created energy deficit, the well-being and health of the losing weight will certainly suffer. To lose extra pounds, you need to reduce the value of the SEC by 500 - 1000 units. But at the same time, the minimum amount of daily calories consumed when losing weight for men is 1800, and for women - 1200. Below these values, it is very dangerous to create an energy deficit in the body.

FOOD- a complex process of intake, digestion, absorption and assimilation in the body of nutrients necessary to cover its energy expenditure, build and renew cells and tissues of the body and regulate body functions.

Chemical substances of food, to-rye are assimilated in the course of a metabolism, received the name of food substances.

In the process of P., nutrients enter the digestive organs, undergo various changes under the action of digestive enzymes (see Digestion), enter the body's circulating fluids, and thus turn into factors in the body's internal environment (see Metabolism and Energy). Man has emerged from the animal world, and therefore the consideration of his nutrition cannot be limited to the purely biological definition of P. given above. At consideration of P. of the person we meet with questions of the social, economic and hygienic plan.

Story

In the second half of the 20th century OK. 50% of the world's population, ch. arr. in developing countries, is experiencing protein-energy malnutrition. So, in the 70s. the energy value of food consumed by humans averaged 3060 kcal in developed countries, and 2150 kcal in developing countries, the intake of protein in the body was 90 and 58 g, respectively, and animal protein was 44 and 19 g. The protein crisis affects, first of all on children's health. Protein-energy malnutrition in childhood adversely affects physical and mental development, which, in turn, can bad influence for the next social activity these persons.

In the analysis of P. as a social problem great importance had the struggle of K. Marx, F. Engels and V. I. Lenin against Malthusianism (see), which explained the lack of food by excessive population growth.

V. I. Lenin showed that the lack of food in tsarist Russia was due not to excessive population growth, but to the contradictions of the capitalist society.

Geographical and climatic factors play a certain role in food production.

However, social factors come to the fore in providing the population with food products. An example is the radical restructuring of the way of life and nutrition of the peoples of the North in our country after the Great October Socialist Revolution. The Brazilian scientist J. de Castro in his book "The Geography of Hunger" showed that the lack of food in developing countries and the starvation of part of the US population are due to the oppression of capital, and not geographical and climatic factors. According to the UN experts, resources the globe if used correctly, they would provide P. significantly more population than we currently have on our planet. It is believed that world food production was in the 60-70s. 20th century only ok. 15% possible. In the modern world, huge amounts of money are spent on military needs. The measures proposed by our country to limit the arms race and subsequent disarmament would make it possible to switch these funds to the benefit of mankind, including the organization of rational nutrition of the peoples inhabiting our planet.

UN specialized agencies - WHO, FAO, UNICEF - have proposed, within the framework of the national development of countries, the implementation long-term program fight against diseases of insufficient P. and, first of all, with deficiency of protein. These programs include reducing the loss of nutritional value of products during their technological processing and transportation, the use of proteins from plants that are poorly utilized in human P., for example, from alfalfa leaves, the use of oilseeds as a source of protein (extraction of protein from cake and meal), and the introduction of agriculture of highly productive varieties of plants and the use of effective fertilizers for their cultivation (the so-called green revolution), the use of agricultural crops for nutrition. animal and human unicellular proteins (see), enrichment with missing amino acids of food products that have an unfavorable amino acid composition, more complete use of the resources of the oceans and other activities. Failures in the implementation of the "green revolution" showed that the implementation of this program in the developing countries is possible only if their social structure is radically transformed, and they switch to the path of socialist development.

In developed countries, where a certain part of the population leads a sedentary lifestyle, systematically experiences stress and eats refined food, poor in ballast substances and rich in fat, easily digestible carbohydrates and salt, arose social problem combat obesity, atherosclerosis, coronary heart disease, hypertension, diabetes.

The socialist planned system has significant advantages over capitalism in the fight against alimentary diseases (see). It made it possible to predict, within the framework of the CMEA, the main directions of research on the production and distribution of food products in relation to the characteristics of the regions and human needs. In our country, radical measures have been taken to completely eliminate mass diseases caused by nutritional deficiencies, for example, pellagra (see), and food poisoning, which were widespread in tsarist Russia (for example, poisoning with so-called drunken bread). The organization of the fight against alimentary diseases, their prevention are based on fundamental research to substantiate the norms of a person's need for nutrients, taking into account age, gender, nature of the work performed, climatic conditions. In 1919, V. I. Lenin set the task of developing human nutrition standards, noting the inadmissibility of reducing them only to energy value. He pointed out: “The norm is to consider how much a person needs, according to science, bread, meat, milk, eggs, etc., that is, the norm is not the number of calories, but the quantity and quality of food” (V. I. Lenin, Poln collected works, vol. 40, p. 342). The development in our country of scientifically substantiated dietary norms has made it possible to rationally plan food production and has created the conditions for a scientifically substantiated organization of nutrition for the population. An important link in the planning of food production and in the organization of rational nutrition of the population was the creation domestic tables chemical composition of food products (see). These tables are widely used in planning the P. of the population on a national scale and in individual regions, and in organizing public catering.

In order to radically solve the food problem in our country, the 26th Congress of the CPSU recognized the need to develop a special food program. The purpose of this program is to solve the problem of an uninterrupted supply of food to the population in the shortest possible time, to ensure a significant increase in agricultural production. products based on the integrated development of agriculture. The development of scientifically based P.'s norms is the basis of the rational organization of public catering (see). Along with the further development of public catering, the 26th CPSU Congress recognized the need to rapidly develop the production of ready-to-eat, semi-finished products in the 11th Five-Year Plan. A lot of work has been and is being done in our country to organize P. for children and adolescents. To this end, nutritional norms for children of various ages have been developed, domestic products for baby food have been created, layout menus have been developed for children's institutions, and work is underway to organize rational nutrition for schoolchildren (see Children's nutrition below). At the 26th Congress of the CPSU, a decision was made to ensure the accelerated development of the output of children's and dietary products, and to increase the production of foodstuffs enriched with proteins, vitamins, and other useful components.

Among the social-gig. and san.-gig. measures aimed at the rationalization of P. of the population and the prevention of alimentary diseases, a prominent place belongs to sanitary and food supervision. The industrial revolution, the ever-expanding use of chemicals in agriculture, brought with them the danger of environmental pollution, and through it food products. The socialist planned economic system has huge advantages over capitalism in environmental protection (see) and prevention of food contamination. A lot of work is being done in our country to prevent the introduction of chemicals into food products. additives that have an adverse effect on human health (see Food Additives).

In the system of social events for the organization G1. Among the population, an important place is occupied by the propaganda of the foundations of rational P., the struggle against incorrect views, bad habits, and religious prejudices.

In the process of development of the human society, significant changes occurred in P. Monkey-like human ancestors ate mainly plant foods, primitive people For example, Neanderthals were mainly engaged in hunting and, to some extent, gathering plant foods. With the advent of agriculture, plant foods again began to occupy a significant share in the human diet. Having learned heat treatment food, a person made it more digestible and was able to use plants as food raw materials, to-rye did not serve as food for his ape-like ancestors. Religion has had a certain influence on the nature of human nutrition and in many countries it does. Christianity and Islam prescribe the observance of long fasts, the excessive duration of which was harmful. In tsarist Russia, during fasting, there were cases of beriberi A (xerophthalmia).

Analysis and synthesis of accumulated scientific information about the correct P. was carried out by ancient scientists, for example. K. Galen. In the Middle Ages in Europe, the science of P. (nutrition) practically did not develop. Generalization and further development of knowledge in the field of the science of nutrition were the works of Ibn Sina. The flourishing of sciences in the Renaissance led both to the accumulation of new facts and to fundamental generalizations, which formed the basis of the science of G1. The famous naturalist and philosopher F. Bacon (1561-1626) substantiated the role of nutrition in longevity, was interested in medicinal use nutrition.

In its further development, the science of nutrition relied on the successes of biochemistry and physics. Huge impact on development scientific ideas nutrition was played by the discovery of the first law of thermodynamics and the applicability of this law to animals. It was found that the combustion of food substances and their biological oxidation give the same amount of heat, this made it possible to put forward the thesis about the equivalence of biol, oxidation and combustion. Mayer (J. R. Mayer) formulated the basics of the concept of food chains (see), showing that the energy consumed by the organisms that inhabit the Earth is a transformed solar energy.

19th century was marked by the rapid development of the physiology and biochemistry of P. During this period, studies were carried out on the processes of digestion, the promotion of food through the digestive tract, the absorption of nutrients and their subsequent assimilation, as well as chem. composition of food products. J. Liebig (1847) and L. Pasteur (1857) formulated ideas about the role of various minerals in nutrition.

The foundation of modern ideas about the physiology of digestion are the works of I. P. Pavlov. Thanks to research begun in the 19th century. and continued in the first half of the 20th century, the main irreplaceable factors of P. were discovered, namely: vitamins (N. I. Lunin, K. Funk, etc.), essential fatty acids, essential amino acids and minerals [ Mendel (L. V. Mendel), McCallum (E. V. McCollum), etc.]. These studies laid a solid foundation for modern ideas about human needs for nutrients.

M. N. Shaternikov, O. P. Molchanova, M. Rubner, and W. Atwater are credited with developing the norms of P..

After the Great October Socialist Revolution in the USSR, the science of P. began to develop especially rapidly. This was largely facilitated by the fact that V. I. Lenin paid great attention to solving the food problem. This was reflected both in his writings and in a number of decrees issued already in the first years of Soviet power. V. I. Lenin's idea was embodied in 1920 in our country scientific research in-that nutrition physiology, M. N. Shaternikov was appointed its director. In 10 years on the basis of this in-that there was more large Ying t of food which director became B. PI. 3bar. Ying t of food was the directing and coordinating center in development of a science about P. in our country. In the 60-70s. in Ying-those nutrition of the Academy of Medical Sciences of the USSR under the leadership of A. A. Pokrovsky a number of fundamental studies were carried out, which served as the basis for the development of the concept of a rational and balanced diet (see).

In the second half of the 20th century interest in P.'s problems sharply increases. They are already considered not only at the state, but also at international level. The increased interest in these problems is determined by their social, economic and medical significance, the lack of food resources on our planet in general and protein in particular.

Both in the USSR and abroad scientific work P.'s problems are conducted in the following main directions: theoretical studies digestion, absorption and assimilation of nutrients; the search for new sources of protein, especially food and fodder protein; development and specification of norms for the consumption of nutrients and foodstuffs by various categories of the population; study of chem. composition of food products and culinary dishes; development of bases to lay down. P., including the problems of probe and parenteral P., the basis of P. of a healthy and sick child, including the problem of substitutes women's milk, preventive P. and other gigabytes. problems P.

Nutritional norms

Theoretical basis modern science about P. is the concept of balanced P., formulated in our country by Academician of the Academy of Medical Sciences A. A. Pokrovsky. According to this concept, ensuring normal life is possible provided that the body is supplied with necessary quantity energy, protein, vitamins, minerals and water in the right proportions for the body.

The concept of balanced nutrition in determining the proportion of individual substances in diets (daily sets of food products) is based on modern concepts of metabolism and energy. At the same time, the main attention is paid to the so-called irreplaceable components of food, to-rye are not synthesized by the enzymatic systems of the body and, therefore, must be introduced into the body in the required quantities with the diet. These food components include essential amino acids, essential (polyunsaturated) fatty acids, vitamins. Along with performance of plastic function (formation of proteins) amino acids (see) are initial connections for synthesis of a number of hormones and neuromediators (thyroxine, adrenaline, acetylcholine, etc.). Polyunsaturated fatty acids (see) are essential components of biomembranes and starting materials for the synthesis of prostaglandins and other biologically active substances. active substances. A number of vitamins (see) performs coenzyme functions, participates in redox reactions. Indispensable components of food are also many minerals (see) and water. The nutrients entering the body are not fully absorbed, in connection with this, the concept of the so-called. nutrient digestibility factor. This coefficient expresses as a percentage the proportion of the nutrient absorbed in the intestine. Great merit in determining the digestibility coefficients of proteins, fats and carbohydrates belongs to W. Atwater.

The energy value of the diet consists of the energy contained in its constituent proteins (see), fats (see) and carbohydrates (see). At the same time, carbohydrates primarily play the role of energy suppliers, while fats and especially proteins are also necessary material for plastic purposes. The use of proteins as an energy material is extremely disadvantageous for the body. On the one hand, proteins are much more deficient than fats and carbohydrates, and on the other hand, during their decay, substances with a toxic effect are formed. It is assumed that 1 g of proteins, fats and carbohydrates of food, taking into account digestibility, gives the body 4, 9 and 4 kcal of energy, respectively. The energy supplied with food is used to maintain the so-called. basic metabolism (see), to ensure the energy consumption of the body necessary for the implementation of the processes of biosynthesis of organic substances, for the active transport of substances, for maintaining physical activity, etc. Part of the energy contained in food is dissipated in the form of heat.

It has been established that even in a state of relatively complete rest (lying in a relaxed position), a person spends 1200-1600 kcal per day. This is so called. BX. Reception of even a small amount of food causes strengthening of the basic exchange, a cut received the name of specific dynamic action of food. Energy expenditure (total energy consumption during the day) of an adult is practically healthy person may vary considerably depending on the profession, gender and climatic conditions. The daily energy requirement for persons whose work is not associated with physical labor or requires insignificant physical effort is 2500-2800 kcal. When performing work associated with significant physical effort, there is a need to increase the energy value of food.

The scientifically based human nutritional norms are based on the results of fundamental studies that have revealed the role in nutrition and the mechanisms of assimilation of proteins (including their constituent amino acids), lipids, carbohydrates, vitamins, and minerals. Table 1 shows the average nutritional and energy requirements of an adult. In our country, human nutrition standards have been developed, which take into account gender, age, energy expenditure of the body. These norms are periodically revised taking into account the latest achievements of science and in accordance with the changes that have taken place in the working and living conditions of the population, including taking into account the ever-increasing mechanization of labor in industry, agriculture, everyday life, the development of urban transport - i.e. taking into account changes that lead to a decrease in the energy consumption of the human body.

The ratio of components in the formula of a balanced diet varies depending on the working conditions and the person's life. It was found that the ratio of proteins, fats and carbohydrates in the diet, close to 1: 1: 4, is optimal for the nutrition of a practically healthy person. With an increase in energy consumption (an increase in the share of physical labor) and an increase in total caloric content in connection with this, the protein content in the diet should be increased to a lesser extent than fats and carbohydrates.

On the basis of scientifically based norms of the human body's need for nutrients, on the one hand, and data on the content of these substances in various food products, on the other hand, the optimal daily food rations, as well as the optimal annual requirement of an adult in food products, were calculated. Diet means the amount of food that provides the daily human need for nutrients and energy. There is also the concept of "actual diet" - this is the amount of nutrients actually received by a person for a certain time (for example, per day) with food. The study diet allows you to open the deficit nutrients in the nutrition of the population and outline measures to eliminate it.

To maintain human health, along with an optimal diet, diet is also important. This is a quantitative and qualitative characteristic of nutrition, including the time of eating, its distribution during the day according to energy value and composition, and the conditions for eating. It has been proven that 3-6 meals a day is the most favorable. 3 main meals per day are recommended - breakfast, lunch and dinner. In addition, there may be a second breakfast, an afternoon snack and a glass of kefir before bed. Most researchers recommend taking the majority of the daily food intake at breakfast and lunch so that dinner accounts for less than one-third of the total daily calorie intake.

Monotonous food usually does not provide the human body with all the necessary nutrients and quickly becomes boring. The more diverse the P. of a person, the more likely it is to get all the food components he needs. According to a number of researchers, another advantage of the diverse P. is that the nutrients that enter the human body in various combinations contribute to physiological adaptation, which increases the fitness of the digestive system.

At P.'s insufficiency there are various patol, states. Predominantly in developing countries, the most widespread protein-calorie malnutrition (see Kwashiorkor), caused by a shortage of basic foodstuffs. As a result of protein deficiency, especially in combination with insufficient total calorie content of the diet, the processes of protein renewal and synthesis are disrupted in the human body, primarily in organs where physiological cell renewal proceeds most rapidly: bone marrow, spleen, pancreas, intestines, etc. A decrease in the energy value of the daily ration to 1000 kcal or less with a content of 25 g of protein or less in it led to rapid physical and mental fatigue, a sharp deterioration in well-being, the development of dystrophic changes in the body and subsequent death (see Alimentary dystrophy, Starvation). These phenomena were studied on large contingents of people during the First World War and in Leningrad during its blockade during the Great Patriotic War.

Vulnerability to certain nutrient deficiencies manifests itself more rapidly the less mature an organism is and the more intense its growth. Observations on young healthy people who received a daily diet of energy value of 1000 kcal, which included 25 g of protein, revealed the development of initial dystrophic changes in their body within 2-3 weeks. It has been established that children with an acute protein deficiency in the body during the first three years of life lag behind in physical and intellectual development, and this process may be irreversible.

Research in the 70s revealed the mechanisms of influence of protein-calorie deficiency on the endocrine status of the organism. At the same time, both features of adaptive changes in endocrine regulation and breakdowns in neuroendocrine regulation systems were revealed. With protein-calorie deficiency, both in the experiment and in humans, the functioning of the mechanisms of immunological protection is disrupted.

Protein-energy deficiency usually accompanies vitamin deficiency (see), although the disclosure of the essence of vitamin deficiency diseases, the industrial production of vitamin preparations and broad measures to combat these diseases have reduced the frequency of their spread.

Basic research has shown that animal protein should be about 50% total protein diet. An analysis of the actual nutrition of the population shows that this requirement is not met by a significant part of the population, especially in developing countries. Diets based on vegetable proteins have a number of disadvantages, which can have an adverse effect on human health, especially on the health and development of children who need more essential food substances per unit of body weight than adults. Plant-based diets contain amino acids in a less favorable ratio than meat products However, iron in plant-based diets is absorbed much worse than iron in animal-derived foods, and, in addition, plant foods do not contain vitamin B12, since it is not synthesized by higher plants. These factors taken together adversely affect the human body, causing alimentary anemia (see) and disrupting the development of the child's body. Detection in the countries of the Middle East of cases of hypogonadism due to insufficient intake of zinc in the body of children or a decrease in its absorption under the influence of chemical. components of plant foods, aroused interest in the phenomenon of insufficient zinc supply to persons who eat mainly plant foods. The lack of animal protein in the diets of a significant part of the population of our planet is due to economic factors, however, in some cases, the refusal animal food due to misconceptions about the alleged benefits of vegetarianism (see).

For countries with a high economic level, the progression of diseases caused by metabolic disorders associated with general overeating or excessive consumption individual food groups. Among such disturbances obesity (see) owing to irrational P. occupies one of the first places. Particularly alarming is the clear upward trend in overweight and obesity among children and young adults. A number of researchers found that excessive P. in the first months and years of a child's life (and even in embryonic period with excessive P. of pregnant women) contributes to the formation of an increased number of fat cells in adipose tissue, in connection with which for many years a predisposition to the accumulation of a significant amount of fat in the body of an immoderately fed child (the so-called treatment-resistant hypercellular form of obesity) is created.

Numerous studies have shown that excessive consumption of food and especially fats of animal origin, containing predominantly saturated fatty acids, increases the risk factor for the development of an atherosclerotic process. Excess consumption of instant sugars, and especially sucrose, is a risk factor for developing diabetes, and excess protein intake is a risk factor for the onset of renal failure syndrome. An excess of nucleic acids in P.'s products can lead to the development of gout and metabolic arthritis, table salt - to the appearance of hypertension, vitamin D - to an increase in calcification processes.

Along with the chem. components food products can contain substances, harmful to its health, which receipt in internal environments of an organism leads to acute or hron, food poisonings (see).

The disclosure of the fundamental principles of the rational nutrition of a healthy person has given reliable approaches for the development of evidence-based methods of therapeutic nutrition (see Medical nutrition). The item of patients with serious disturbances of processes of digestion can be carried out through the probe entered into a stomach or a duodenum, - enteral food or intravenous - parenteral food (see). With probe P., as a rule, easily digestible liquid mixtures or partially or completely split food products (hydrolysates) are introduced into the patient's body. A diet consisting only of amino acids fatty to-t, simple sugars, vitamins, minerals and water, but the name is elemental. Based on the elemental diet, mixtures for parenteral P. are being developed. As studies by K. V. Sudakov, A. M. Ugolev and others have shown, the digestive tract has a significant effect on the nervous and endocrine regulation metabolism, on the assimilation of nutrients that have entered the body, therefore it is desirable to introduce food into the body of a sick person per os. Parenteral P. should be used only if probe P. is impossible, and probe P. - only if conventional P. is impossible.

The preventive orientation of Soviet medicine was also reflected in the organization of human nutrition. In our country, the basics of therapeutic and preventive nutrition for workers in hazardous industries have been developed and a system of measures has been introduced for the actual implementation of this type of nutrition (see Treatment and Preventive Nutrition).

Children's nutrition

The food of children has a number of differences from P. of adults. During childhood, especially in children early age, the need for nutrients and energy is relatively higher than in adults. This is due to the predominance of assimilation over dissimilation associated with the rapid growth and development of the child.

The scientific substantiation of the norms of the needs of children of different age groups in nutrients and the substantiation of the sets of products necessary to cover these needs was carried out on the basis of the patterns of development of the child's body. Sizes fiziol, needs of children of various age groups in nutrients are established taking into account the functional and anatomo-morphological features inherent in each age group. For example, the digestive and metabolic systems of young children are the most vulnerable, their ability to adaptive reactions is still poorly expressed; therefore, the composition of the food of young children should most fully correspond to the activity of their enzyme systems. The norms of the need for nutrients in pre-pubertal and pubertal children take into account the gender differences that arise during this period in the dynamics of weight gain (mass) of the body, height, muscle strength, which is reflected in the need for nutrients and energy. The nutritional norms of adolescents also take into account the need for optimal intake of essential amino acids and vitamins with food to maintain the function of c. n. With. and tense mental activity students.

Recommended nutritional requirements for children

The recommended norms for the need of children for nutrients are designed in such a way as to avoid, if possible, both malnutrition of children and the introduction of excess amounts of nutrients into their bodies, since this excess, according to some researchers, is one, but not the main, factor in the occurrence of acceleration. (see) - accelerating the physical and sexual development of children, which outstrips the development of the functions of a number of organs and systems and reduces the adaptive capabilities of the body. According to L. I. Smirnova and M. P. Chernikov, the development of acceleration is due to excessive protein intake at an early age.

P., corresponding to the body's needs for basic nutrients and energy, should be considered rational in childhood. Deviation from these principles adversely affects the development of children. A number patol, states connect children at early age with the wrong P.. These include impaired tooth formation, caries, the risk of diabetes, hypertension syndrome, renal pathology, allergic diseases, obesity. The values ​​of the physiological need of children and adolescents for nutrients are presented in Table 2.

Biol, the value of proteins is determined by the amino acid composition (see Amino acids) and the ability of these proteins to hydrolysis under the influence of digestive tract enzymes. For children, 9 amino acids are indispensable: tryptophan, lysine, methionine, threonine, histidine, phenylalanine, valine, leucine, isoleucine, and for children in the first months of life, also cysteine. 40% of the need for amino acids should be covered by essential amino acids. Of particular importance for the child's body is the ratio of tryptophan, lysine and sulfur-containing amino acids (methionine -f-cysteine); during the growth period of a child, the most favorable ratio of tryptophan, lysine and sulfur-containing amino acids is 1: 3: 3. Children need more than adults in protein of animal origin (from 100% to infancy up to 75-55% in subsequent periods).

The need for dietary protein per 1 kg of body weight with the age of the child gradually decreases from 3-3.5 g in early childhood to 1-2 g in adolescence. Both insufficient and excessive protein intake in the diet of children adversely affects their growth and psychomotor development.

An important component of food in childhood are fats. In quantitative terms, the need for fat corresponds to the need for protein. The need for polyunsaturated fatty acids (PUFAs) is determined by the content of linoleic acid in the diet: from 3-6% in the neonatal period and in infancy to 2-3% of the total calorie content of the diet in preschool and school age. To ensure the need for PUFAs, along with fats of animal origin, vegetable fats rich in polyunsaturated fatty acids should be used in the child's daily diet.

Recommendations for the amount of carbohydrates in a child's diet are inextricably linked to energy metabolism studies. It is generally accepted that in the diet of children older than a year, the most physiological ratio of proteins, fats, carbohydrates is 1: 1: 4. In the diet of children school age the amount of carbohydrates with increased muscle load may increase slightly, and the ratio of proteins, fats, carbohydrates will be 1: 1: 4.5.

The growth of children is accompanied by processes of intensive formation of the skeleton, muscle, hematopoietic and other body systems. These processes must be provided with the necessary amount of minerals and their optimal ratio, and primarily with salts of calcium, phosphorus, magnesium, iron, potassium, sodium and a number of trace elements, including salts of copper and zinc.

A significant impact on the reactivity and metabolic processes of a growing organism has a supply of vitamins. tension metabolic processes in childhood determines the increased need of the body (per 1 kg of body weight) in most vitamins.

In-volume of nutrition of the Academy of Medical Sciences of the USSR developed approximate daily sets of food products for children aged 1 to 17 years (Table 3). As the child grows, the number necessary products changes.

The total volume of milk decreases from 650 g at 2 years of age to 550-500 g by 7 years and at school age. The amount of meat, fish, bread, cereals, vegetables, cottage cheese is gradually increasing, approaching the norm for adults.

It is very important to provide children with enough vegetables, fruits, which are a source of vitamins and mineral salts.

As the number of teeth increases, the volume of secreted saliva increases, the activity of enzymes goes. - kish. tract, the range of products and dishes is expanding, their culinary and technological processing is becoming more complicated. At the age of 1 to 1.5 years, you can switch from pureed food to finely chopped food, by 3 years - to food in the form of small pieces, and then - in the form of portioned pieces.

For children over the age of 1.5 years, culinary steam cooking can be combined with light frying. For children older than 3 years, frying food is used more widely.

Regular adherence to the correct P. regimen of children contributes to the development of conditioned reflexes for the timely separation of digestive juices, better absorption of nutrients, and the frequency of food evacuation. At the age of 1 to 1.5 years, children are transferred from 5 meals a day to 4 meals a day, but the amount of food remains the same. For children aged 1.5 to 3 years, the volume of the daily ration is 1300-1400 ml, from 3 to 6 years - up to 1800 ml, at school age - from 2000 to 2800 ml. First breakfast is 20-25% daily calories, lunch - 30-35%, afternoon tea -15% and dinner - 20-25%.

Rational P. of children, starting from an early age, is an important factor in protecting the health of the younger generation.

Nutrition in old age

With aging, assimilatory processes in organs and tissues are weakened, the rate of redox reactions slows down, and a restructuring occurs in the system of neurohumoral regulation of metabolism and functions (see Old age, aging). This necessitates an appropriate restructuring of the P. of people in the elderly and senile age, which gerodietetics, a branch of honey, is called upon to deal with. knowledge, engaged in the scientific development and organization of P. of the elderly and old people.

P. of people in the elderly and senile age should correspond to the age-related needs of the body for basic nutrients, energy (the energy consumption associated with the type of activity should also be taken into account) and prevent the development premature aging. A. A. Pokrovsky laid the foundation for the scientific organization of P. of the elderly: the energy balance of P. in accordance with actual energy consumption; antiatherosk l heretical orientation of the diet; the maximum diversity of P. and its balance in terms of the main irreplaceable factors; optimal supply P.'s diets with substances that stimulate the activity of enzyme systems; the use of food products and dishes that are quite easily exposed to the action of digestive enzymes. In this regard, it is advisable to gradually reduce the calorie content of food over decades. The calorie content of the daily diet of a person aged 20 to 30 years is taken as 100%. At the age of 31-40 years, it is proposed to reduce the energy intensity of food to 97%, at 41-50 years old - up to 94%, at 51-60 years old - up to 86%, at 61-70 years old - up to 79%, at 70 years old and older - up to 69%. In our country, at the age of 60 years and older, the recommended calorie content of P. is in the range from 2100 to 2650 kcal, depending on gender, living conditions, in particular, the degree to which the population is provided with utilities, and the climatic zone of residence. First of all, it is necessary to provide P.'s rations with a sufficient amount of protein.

In the USSR, protein norms are 1.2 and 1.0 g per 1 kg of body weight for the elderly and old people, respectively. Dietary protein must ensure the intake of a wide range amino acids, of which lysine and methionine are of particular importance in old age. The latter can be achieved by using various combinations of food products, which contributes to the increase in digestibility and biol, the value of food. OK. 60% daily requirement in proteins, it is preferable to satisfy at the expense of products of animal origin, 30% of them - at the expense of milk and its products.

The daily intake of fats by the elderly should not exceed 0.8-1.0 g per 1 kg of body weight. At the same time, 1/3 of its total amount should be fats of vegetable origin. It is necessary to provide diets with a sufficient amount of lipotropic substances.

The amount of carbohydrates in food is also recommended to be reduced. Their content should not exceed 300-320 g and be no more than 50-55% of the total daily calorie content. It is more expedient to reduce the amount of carbohydrates in P. by reducing sugar, bakery, confectionery, jam and other sweets in diets. In the P. of the elderly, it is recommended to increase the consumption of foods containing fiber, pectin.

According to Yu. G. Grigorov, the ratio between the main nutrients in diets - proteins, fats and carbohydrates - should be 1: 0.8: 3.5.

In the USSR, norms for the need for a number of vitamins for persons aged 60 to 70 years have been developed. Salt intake should be limited to 8-10 g/day, including the amount of salt (3-5 g) contained in natural foods.

The balance in these basic nutrients, as well as the requirement for the maximum diversity of dietary intake of elderly and old people, can only be met if they are included in diets daily. variety of products. Elderly people can eat any food; we can only talk about which of them is preferable to use. A set of basic food products that provides a balance of quantitative and qualitative ratios of nutrients recommended for inclusion in the daily diets of P. of the elderly and old people is shown in Table 4.

In the above set of products, the main share is made up of vegetables, fruits, meat (low-fat varieties), milk, cottage cheese and other products containing essential P factors. They are also among preferred products. The same products as draining internally e butter, eggs, sugar, although they should not be completely excluded from the range of P. of the elderly, but their number should be limited; this allows you to optimally bring together the actually consumed and recommended amount of nutrients.

The anti-atherosclerotic orientation of the diet is achieved by reducing the total calorie content of P. and the quota of animal fats, increasing the proportion of vegetable oils, as well as the systematic inclusion of products with lipotropic properties containing labile methyl groups (dairy products, vegetables, fruits).

P.'s regimen, namely the number of meals, the intervals between them and the calorie content (see) of each meal during the day must be strictly regulated. The most rational is four meals a day. The first breakfast - 25%, the second - 15%, lunch - 35% and dinner - 25% of the total daily calories. The last meal should be no later than 2 hours before bedtime. Inclusion in the P.'s mode of unloading days (see) - kefir, apple, vegetable, etc. - is carried out only according to the recommendations and under the supervision of a doctor.

Mandatory use in P. of elderly people of any strictly certain products or dishes is inexpedient. A sharp and radical change in the existing food stereotype in the elderly can often lead to a deterioration in their health. It is not recommended to completely exclude favorite dishes from the diet of elderly people and replace them with food that they did not like and did not use before.

Nutrition for pregnant women

In the first half of pregnancy, for a woman of average weight (55-60 kg) and average height (155-165 cm), the daily diet should be 2400 - 2700 kcal and contain 110 g of protein, 75 g of fat, 350 g of carbohydrates. In the second half of pregnancy, the total caloric content of the diet increases to 3200 kcal. You should strive to have approx. 65 g of animal proteins, including 50% from meat and fish, 40% from milk and its products, 10% from eggs. From fats, preference is given to butter and ghee. Up to 40% of the total amount of fats should be fats of vegetable origin, containing polyunsaturated fatty acids and tocopherols that are important for the body of the mother and fetus.

The source of carbohydrates for pregnant women, especially in the second half of pregnancy, should be vegetables, fruits, wholemeal bread, cereals - buckwheat and oatmeal. For 1-2 months. before childbirth should be excluded from diets easily digestible carbohydrates, such as sugar and confectionery, which contribute to the increase in fetal weight. Free fluid in the diets of pregnant women (including first courses, milk, compotes, tea, juices) should contain no more than 1000-1200 ml in the first half of pregnancy and 800 ml in the second half, and with a tendency to edema -600 ml.

The average daily vitamin requirement of a healthy pregnant woman is increased and is: in thiamine (Vx) - 2.5 mg, riboflavin - 2.5 mg, pyridoxine - 4.0 mg, cyanocobalamin - 3.0 mcg, folic acid - 0 .4 mg, ascorbic acid - 150 mg, nicotinic acid - 15-20 mg, retinol - 2.0 mg (6600 IU), calciferol - 500 IU, tocopherol - 15-20 mg, phylloquinone - 5 -10 mg. The need for minerals during pregnancy is also increased and for a healthy pregnant woman, on average, it is: in calcium - 1.5 g, potassium - 3.0-3.5 g, phosphorus - 2.0-3.0 g, magnesium - 1 0-1.5 g, gland - 15.0 mg; sodium chloride - 10-12 g in the first half of pregnancy, 6-8 g in the second half of pregnancy and for 1 month. before childbirth 4-5 years.

A prerequisite for rational P. of a pregnant woman is compliance with a certain regimen of P. In the first half of pregnancy, 4 meals a day are recommended, in the second half - 5-6 meals a day. Breakfast should be up to 30% of the daily caloric intake, second breakfast - 15%, lunch - 40%, afternoon tea - 5%, dinner - 10%.

Nutrition for women in the postpartum period

The nutrition of the puerperal should be complete and regular. The diet should include yogurt and cottage cheese (100-200 g), fresh fruits, berries, vegetables and other foods rich in vitamins.

Nutrition for athletes

The nutrition of athletes has a number of features due to a high degree of physical and neuropsychic stress that occurs during training and competition and is accompanied by the activation of metabolic processes, which causes an increased need for energy and individual nutrients in the body. It should not only compensate for the consumed amount of energy and nutrients, but also help to increase sports performance and accelerate its recovery after intense physical exertion. The calorie content of the daily diet of athletes is determined by their energy consumption, which, depending on the specifics of the sport, can range from 3000 kcal (for chess players, draftsmen) to 6500 kcal (for those involved in sports associated with prolonged strenuous physical activity). P.'s diet should include a wide range of products (meat, fish, eggs, milk and dairy products, animal and vegetable fats, cereals, vegetables, fruits). During the training period, when performing sports exercises that increase muscle mass and develop strength, the protein content should be increased to 16-18% in calories; with prolonged, intense physical exertion aimed at increasing endurance, food should be different high content carbohydrates (60-65% in calories). During the competition, easily digestible foods with the optimal amount of protein and carbohydrates are needed. It is not recommended to eat foods high in fat and high in fiber. During the recovery period, it is important to ensure the acceleration of anabolic processes and contribute to the replenishment of carbohydrate reserves, minerals and vitamins in the body. It is advisable to use specialized products of increased biol, values ​​containing easily digestible proteins, carbohydrates, vitamins, macro- and microelements (protein sports product SP-11, Olymp protein biscuits, Olympia carbohydrate-mineral drink, etc.). The food regimen for two workouts per day should include 5-6 meals; for example, with a 6-time meal: breakfast - 30% of the total calorie content of the diet; after the first workout - 5%; lunch - 30%; after the second workout - 5%; dinner - 25%; second dinner - 5% (lactic acid products, buns, etc.).

Meals for personnel of the Armed Forces

The first information about food rations for troops is found in the military history of ancient Greece and ancient rome. In the Russian army, provisions were first introduced by Peter I. A. V. Suvorov and other prominent commanders showed great concern for the P. soldiers. In Russia, military doctors began to be involved in the control of the P. of the troops at the end of the 18th century, since 1828 they were entrusted with supervision over the preparation of food and the quality of the food and drinks supplied.

The scientific development of the issues of military defense of the Russian army began in 1905 by a special commission, which included A. Ya. Danilevsky, S. V. Shidlovsky, G. V. Khlopin, and others. New food layouts for the lower ranks. The experience of wars convincingly showed that insufficient and defective P. leads to the occurrence of beriberi in the troops: scurvy, night blindness, beriberi and alimentary dystrophy, as well as a decrease in the body's resistance to external influences.

Rational P. troops promote health, physical development and combat readiness of military personnel, their resistance to various loads and unfavorable factors military labor.

The organization of defense in the Armed Forces is determined by the requirements of charters, special regulations, guidelines, instructions, and directives of the USSR Ministry of Defense. The unit commander and his deputy for logistics are responsible for organizing P.. The food service directly provides timely and full-fledged food service for personnel. Honey. service provides medical control of P.

Food is prepared 3-4 times a day in military canteens (galleys). The troops are carried out in accordance with established standards. Allowance rates are established by a decision of the Council of Ministers of the USSR and put into effect by an order of the Minister of Defense of the USSR. They are sold in the form of food rations (food rations), which are a set of a certain amount of food sold to one soldier per day. Rations are divided into basic, additional and special; they are differentiated taking into account the peculiarities of military labor and climatic conditions, include a diverse range of products that provide good nutrition and high taste qualities food.

The main rations include soldier, sailor, flight, cadet, hospital, sanatorium, for submarine crews, etc.

Additional rations are issued in excess of the basic ration. Special rations are intended for personnel serving in the mountains, in remote areas, for crews of jet and turbojet aircraft, etc.

Hospital P. in infirmaries, MSB, hospitals is carried out according to the norms of the main hospital ration according to the diets prescribed by the attending physicians. For patients with tuberculosis, burn and radiation diseases, special norms have been established.

Food rations are established on the basis of studying the quantitative and qualitative adequacy of P. to physical and neuropsychic stress. Under the conditions of significant technical equipment and the widespread use of automated means in military affairs, the energy consumption of many specialists has decreased and, on average, is approx. 3500 kcal per day. AT field conditions, especially in exercises, during landing, action in the mountains, in deserts, in regions with a cold climate, energy consumption can be significant (over 5000 kcal). The energy value of the rations compensates for the maximum energy expenditure of military personnel. Military rations fully meet the need for proteins, fats, carbohydrates, vitamins and microelements. The security of ascorbic acid is achieved by its maximum preservation during storage and culinary processing of products. In case of insufficient content in the diet of fresh vegetables and other sources of vitamin C, preventive fortification of prepared foods is carried out by adding ascorbic acid to the third dish daily, 50 mg per person (see Vitaminization of food products).

The food of military personnel is carried out in accordance with the layout of foodstuffs, which is compiled by the food service together with the honey. service and instructor-cook (senior cook) and is approved by the unit commander. It reflects the name of the dishes planned for each day of the week, the estimated yield (mass) of finished dishes, meat and fish portions. The layout allows you to calculate the nutritional value of the planned dishes and daily ration (see Menu layout).

The dietary regimen (food regimen) is determined by the nature and conditions of combat training activities of personnel; it provides for the frequency and time of meals, the distribution of food during the day according to the set of products and their energy value. In ground forces three-time P. is established, on the ships, in aviation and to lay down. institutions - four, five times a day. With a three-time P.'s regimen, the intervals between meals should not exceed 7 hours; 30-35% of the energy content of the daily diet is given for breakfast, 40-45% for lunch, and 20-30% for dinner. During night shifts (on guards), an additional meal is introduced due to the redistribution of the products of the main ration. In hot climates, the so-called. shifted mode P: breakfast at 5.30-6.00 (35% of the energy content of the diet), lunch at 11.00-11.30 (25%) and dinner - 18.00-18.30 local time (40%). During night exercises and classes, it is planned to increase the energy value of dinner.

Daily ration pilots of jet and turbojet aviation is characterized by a wide variety of food products and high energy value. Meal time is set depending on the flight time. Pre-flight P. is organized 1-2 hours before the start of flights, a second breakfast or second dinner is given to pilots between flights or after they end in order to compensate for energy consumption. During flights of St. 4 o'clock P. pilots organized in the aircraft with the use of on-board rations. Each crew member is given on-board and portable emergency food supplies for P. for 3 days.

The habitation of the personnel of the submarine fleet during autonomous navigation is characterized by a wide variety of products of high nutritional value (cheese, eggs, caviar, balyk products, dairy products, meat, smoked meats, sausages, canned meat and fish, roach, fruits, vegetables). Provisional chambers are designed for long-term storage of vegetables and perishable products (including quick-frozen dishes) and freeze-dried products. The daily ration of submarine crews is divided into 4 meals: breakfast - 25%, lunch - 33%, dinner - 25%, evening tea - 17% of the energy value of the ration.

In the field, food rations for boiler use (field rations) are used, as well as on-board rations and dry rations for individual infantry. Soldiers and officers are provided with hot food from field kitchens at battalion food stations. Officers of the administration and special units receive food at separate points of settlement or in the field canteens of military trade. For cooking, products are mainly used that do not require long-term cooking and special conditions for storage and sale (food concentrates, canned food, quick-cooking cereals, etc.). The time of issuing hot food is planned depending on the conditions of the situation and the nature of the tasks performed. If three times is impossible, a two-time issuance of hot food is established with the obligatory organization of intermediate P. by products that do not require heat treatment. For P. in the field, the food service has a variety of technical means. Products are delivered to the troops in special vans and refrigerators. Bread is baked at field mechanized bakeries. Food is prepared in trailer and car camp kitchens, field kitchens and dining rooms.

Dry rations are given to each serviceman for individual P.; it consists of a set of products that do not require cooking and provide three meals a day during the day (canned food, condensed milk, sugar, tea, biscuits or crackers).

The safety of P. personnel in the conditions of the use of weapons of mass destruction is ensured by a system of measures taken by the food service: shelter and stockpiling of food in protective containers and packaging, compliance with the rules for preparing, distributing and eating food in the contaminated area, monitoring the degree of contamination of food and equipment and organizing expertise. Cooking and eating food is prohibited in areas contaminated with toxic substances and bacterial means, or when high levels radiation.

Special P. is organized for military personnel operating in specific conditions (in the mountains, regions of a cold or hot climate, etc.); it compensates for energy consumption, increases efficiency and resistance to adverse environmental factors. The set and quantity of products of special diets provide a variety and high biol, value of P.

Medical-prof. P. is assigned to military personnel working in conditions of harmful labor factors for non-specific prevention of their adverse effects, and is issued in addition to the usual daily ration.

Honey. control over the nutrition of the troops (fleet) is the most important duty of the honey. service and represents the system of sanitary and food supervision, including participation in the development of rations and new food products for the troops and forces of the fleet, preventive supervision of the design, construction and reconstruction of P. facilities, current supervision of dignity. condition of objects of food service and health of food workers, current control over P. of military men (fullness, mode and quality of P.), assessment and forecasting of the food status of military men.

Head of medical service of the military unit (ship) participates in the development of the P. regime and the layout of products for cooking, controls the quality of the P. of personnel and dignity. the state of the food objects of the unit, submits to the commander the conclusions on the soldiers and sergeants in need of dietary P., selects samples of food and food products for determination in the dignity. -epid, institutions of their good quality, chem. structure and power value, estimates the state of health of the military personnel connected with P. (the food status), takes part in a dignity. examination of foodstuffs and nutrition. San. examination of food entering the troops is carried out by specialists of san.-epid, institutions with the participation of military doctors. In the field, only food of dubious quality or suspected of infection is subject to examination. The examination is carried out with the help of timesheets (laboratories) designed for field research methods. Products are examined on the spot, or their samples are sent to medical institutions. and vet. services. The conclusion about the suitability of food for P. personnel is given by a representative of the honey. service, the decision on its further use is made by the commander of the unit.

tables

Table 1. AN ADULTS NEEDS FOR NUTRIENTS (average data, according to A. A. Pokrovsky, 1974)

Table 2. PHYSIOLOGICAL REQUIREMENTS FOR SELECTED NUTRIENTS AND ENERGY IN CHILDREN AND ADOLESCENTS

Table 3. EXAMPLE DAILY FOOD SET FOR CHILDREN AGED 1 TO 17

table 4

Bibliography: Arnaudov G. D. Drug therapy, per. from Bulgarian, Sofia, 1975; Budagyan F. E. Food toxicoses, Toxicoinfections and their prevention, M., 1972; B prisoner I. M. Energy metabolism and nutrition, M., 1978, bibliogr.; Venediktov D. D. International health problems, p. 173, M., 1977; Food Hygiene, ed. K. S. Petrovsky, vol. 1-2, M., 1971; Egorysheva I. V. and Sh and-linis Yu. A., V. I. Lenin about the problem of combating hunger in pre-revolutionary Russia, Owls. health care, No. 5, p. 69, 1969; To about r about b to and N and G. S. Products of baby food, M., 1970; Lavnikov A. A. Fundamentals of aviation and space medicine, M., 1975; Lavrov B. A. Textbook of nutritional physiology, M. - L., 1935; L and p about fi-ski y SM Nutrition and digestion during pregnancy, M., 1978, bibliogr.; Minkh A. A. Essays on hygiene exercise and sports, M., 1980; Lifestyle and human aging, ed. N. K. Witte, p. 105, Kyiv, 1966; General and military hygiene, ed. Edited by N. F. Kosheleva. Leningrad, 1978. Society and human health, ed. G. I. Tsaregorodtseva, p. 214, M., 1973; The experience of Soviet medicine in the Great Patriotic War of 1941 - 1945, vol. 33, p. 130 and others, M., 1955; Basic principles of nutrition for children and adolescents, ed. E. M. Fateeva, Moscow, 1974; Fundamentals of space biology and medicine, ed. O. G. Gazenko and M. Calvin, vol. 3, p. 35, Moscow, 1975; Pap A. G. et al. Rational nutrition of pregnant women, women in childbirth and puerperas, Akush, and gynec., L "3, p. 51, 1979; Petrovsky K. S. Nutritional hygiene, M., 1975; Nutrition during pregnancy and lactation, Reports of WHO experts, M., 1966; Nutrition Pi sport, edited by V. N. Litvinova, L., 1976; Pokrov with k and y A. A., V. I. Lenin and the solution of the food problem, Vopr, pit., v. 29, No. 2, p. 3, 1970; he, Physiological and biochemical bases for the development of baby food, M., 1972, bibliogr.; he, Metabolic aspects of pharmacology and food toxicology, M., 1979; Pokrovsky A. A. and Fateeva E. M. Topical issues nutrition of children of school age, Vestn. USSR Academy of Medical Sciences, No. 5, p. 17, 1972; Recommendations for the nutrition of athletes, ed. A. A. Pokrovsky, M., 1975; Guide to gerontology, ed. D. F. Chebotareva and others, p. 471, M., 1978; Handbook of Pediatric Dietetics, ed. Edited by I. M. Vorontsov and A. F. Mazurin. Leningrad, 1980. Studenikin M. I. Lado-do K. S. Nutrition of young children, L., 1978, bibliogr.; Living conditions and the elderly, ed. D. F. Chebotareva, p. 135, M., 1978; Fateeva E. M., Balashova V. A. and Khaustova T. N. Nutrition of schoolchildren and adolescents, M., 1974; Chemical composition food products, ed. M. F. Nesterin and I. M. Skurnkhin. Moscow, 1979. Chemical composition of food products, ed. A. A. Pokrovsky, M., 1976; Sh a ter n and k o v V. A. and Kona sh e v V. A. The 50th anniversary of the first five-year plan for the development of the national economy of the USSR and the science of nutrition in our country, Vopr, pit., No. 5, With. 3, 1979; Shater nickname about in M. I. About the protein part of food rations, in the same place, t. 1, century. 1-2, p. 44, 1932; Aykroyd W. R. Attack on hunger diseases, M., WHO, 1972; I to about in l of e in H. N. Food of athletes, L., 1957; A 1 1 a-b at M. "W-" orld food resources, actual and potential, L., 1977; Arlin M. The science of nutrition, N.Y., 1977; Burton B. T. Human nutrition, N. Y., 1976; Davidson S.a. o. Human nutrition and dietetics, Edinburgh, 1975; Frydman G. Hajeri H. et Papie r n i k E. Retard de croissance intra-uterin et nutrition prenatale, J. Gynec. obstet. Biol, repr., t. 6, p. 913, 1977; Gauli G., Sturm an J. A. a. Raiha C. R. Development of mammalian sulfur metabolism, absence of cysta-thionase in human fetal tissues, Pediat. Res., v. 6, p. 538, 1972; Handbuch der Gerontologie, hrsg. v. D. F. Cebotarev u. a., Bd 1, S. 528, Jena 1978; Jones K. L. Foods, diet, and nutrition, N. Y.-San Francisco, 1975; K e t z H. A. u. a. Grundriss der Ernahrungslehre, Jena, $197; M u Tiro H. N. a. Young V. R. Protein metabolism in the elderly, Observations relating to dietary needs, Postgrad. Med., v. 63, p. 143, 1978; nutrition, ed. by A. Chavez, v. 1, Basel, 1975; P i t-k i n R. M. Nutritional, Influences during pregnancy, Med. Clin. N. Amer., v. 61, p. 3, 1977, bibliogr.; Runyan T. J. Nutrition for today, N. Y., 1976; Wi 1-1 i a m s S. R. Nutrition and diet therapy, St. Louis, 1977.

B. A. Shaternikov; Yu. G. Grigorov (rep.), H. F. Koshelev, K. K. Silchenko (military), V. A. Konyshev (soc.), K. A. Laricheva (sports.), E. P. Samborskaya (ac.), E. M. Fateeva (ped.).

In order for you to clearly control your weight, it doesn’t matter if you are trying to lose it, gain it or maintain it, in any case you just need to know what the daily intake of fats, proteins and carbohydrates is. The table will help you figure it out in no time.

Rule number one: the key to success is the right ratio

All the body's needs for nutrients, micro- and macro-components, of course, are strictly individual. Therefore, since most of the calculations according to the criterion "daily intake of proteins, fats and carbohydrates" are made for an ordinary, average person, after a while you yourself will understand what exactly your body requires, and you can slightly adjust any program exclusively for yourself.

The most simple formula the ratio of BJU (or proteins-fats-carbohydrates) is approximately 1:1:4. But it is not suitable for everyone, since a lot of nutrition depends on your age, weight, lifestyle and the results you want to achieve. So if you want to know in more detail how to make the most efficient use of this formula in your diet, let's look at each of its components separately.

Squirrels

Protein is a necessary component of all tissues of the human body. In a child's body, they are needed for growth, in an adult - for tissue regeneration. The composition of all proteins includes various amino acids, each of which is simply necessary for a person.

The predominant ones with a unique set of amino acids are nuts, sprouted grains, soy milk, white meat of chicken or turkey, fish, or other fermented milk products, milk.

We select the amount of proteins based on your weight

Daily protein is based on one and a half grams of protein per kilogram of weight. It is desirable that 30-35% of the total amount of proteins be of animal origin, and the rest - of vegetable origin. Thus, if an adult weighs, for example, 70 kilograms, he should consume 105 grams of protein per day, only a third of which, i.e. 35 grams, should be of animal origin.

Fats

It is a big misconception that you can only harm yourself and your figure by consuming fat. The main thing is that there should be a measure in everything. Fats are simply necessary for the human body, because without them, many cells will not be able to function normally.

All fats that exist in nature are divided into saturated and unsaturated, this is determined by the ratio of fatty acids and glycerol in the composition.

For normal functioning, the body needs three main polyunsaturated fatty acids - these are Omega-3, Omega-6 and Omega-9. You can find them in fish, pumpkin seeds, vegetable oils(olive, almond).

Saturated fats, selected in a strictly defined amount, saturate the body with the necessary energy. However, be careful, a large amount of saturated fat in food contributes to increased deposition cholesterol on the walls of blood vessels.

What happens if you completely eliminate fats?

It is also worth reducing the consumption of so-called trans fats to a minimum, since their effect on the body cannot be called positive. These fats are often found in flour products especially in margarine.

A lack of fat can lead to a decrease in general immunity, disturbances in the work of the central nervous system, bowel problems and duodenal ulcers.

Excessive presence of fats in the diet is the cause of high blood cholesterol levels, obesity and memory loss.

Carbohydrates

Carbohydrates are one of the main components of our daily diet. Moreover, it is one of the most important sources of energy. That is why reducing the amount of carbohydrates consumed will not lead to anything good. It is more important to learn how to choose the “right” carbohydrates.

The energy that comes in per day human body, about three to four fifths should be replenished through precisely complex carbohydrates, one tenth - at the expense of simple, and the rest - when burning proteins and fats. Therefore, the daily rate of protein and carbohydrates in your diet must necessarily correspond to the amount of fat.

All carbohydrates that can only be on your plate are divided into three large groups: monosaccharides, polysaccharides and oligosaccharides. All of them are simply necessary for our body, otherwise no proteins and fats simply can not be absorbed. The largest part of the carbohydrates entering the body are monosaccharides and disaccharides. Be careful, with excessive intake of sugar in your body, some of it can accumulate in the muscles and liver as glycogen.

What other carbohydrates are there?

Also, according to the time or speed of obtaining energy by the body, carbohydrates are divided into fast and slow (or, as they are also called, simple and complex).

Should be a permanent part of your daily diet, but again, do not overdo it, the amount of this substance directly depends on how much you drive. However, the average daily intake of carbohydrates is about 350-500 grams, no more.

One of the most accessible representatives of fast carbohydrates is sugar, since it contains only two molecules - glucose and fructose. Fast carbohydrates (all kinds of sweets, fruits, buns, etc.) are absorbed into the bloodstream with instant speed, almost immediately after we have eaten, but they also disappear as quickly as they appear. Therefore, it is desirable, if not completely, then at least as much as possible to exclude foods supersaturated with fast carbohydrates from your diet. Remember, fast carbohydrates are the main initiators of obesity. Therefore, if you want to independently calculate the daily rate of fats, proteins and carbohydrates, be sure to pay attention to the latter.

Unlike the former, slow carbohydrates are absorbed into the blood over a much longer period of time, but on the other hand, this happens much more evenly, and the fat reserves of our body are not replenished.

Daily rate of fats, proteins and carbohydrates: calculation table

The most important thing in the diet is the correct ratio of the amount of which is determined mainly by your age and lifestyle. Remember, the whole point of diets and just proper nutrition is not to completely exclude all kinds of harmful things from your diet, leaving only vegetables and herbs. The main and main goal is to make sure that the body receives exactly the amount of nutrients that it needs.

For children and the elderly, the daily intake of fats, proteins and carbohydrates (table below) is significantly different. This must be taken into account. If you strictly follow all the tips mentioned above, you will understand that calculating the daily intake of proteins, fats and carbohydrates is, in general, a simple matter. And the benefits of it are very, very many!

In order to make it easier for you to choose what is right for you, below is the daily allowance of fats, proteins and carbohydrates. The table for men and women contains all the necessary values.

Conclusion

Always think carefully about your menu. For example, eating fats at the same time as carbohydrates is not recommended for the reason that with a one-time intake of both of them, the body first of all begins to break down carbohydrates, since it takes much less time for this than for the processing of fats. Thus, fats are simply stored in reserve.

It is better to limit or even eliminate the intake of carbohydrates after six or seven in the evening, by the evening the metabolism becomes a little slower, which means that carbohydrates are no longer completely processed, and insulin enters the blood in excess.

If you wish, for example, to reset excess weight, give up simple carbohydrates for a while, and fats are best consumed from nuts or fish. Also limit the amount of white rice and potatoes.

And in order to make it easier for you to control yourself at first, try starting a food diary. In it you will write down everything that you ate during the day. And you need to not just write it down, but also work hard, and before eating, weigh the portion and calculate how much protein, fat, carbohydrates and calories are in it. Only you need to do this really honestly, because you definitely can’t deceive your body! Never forget that there is a certain daily norm of proteins, fats and carbohydrates, which is simply necessary to follow.

Nowadays, there are various nutritional standards, and initially in Russia they were determined in 1930. Correctly speaking - physiological needs the human body in useful nutrients.

The physical activity coefficient (CFA) formed the basis in 1991 for calculating the nutritional rate.

The balance in the daily menu of an ordinary person should be between proteins, fats and carbohydrates, as follows:

• Proteins - 15%
• Fats - 35%
• Carbohydrates - 50%

If you play sports or lead an active lifestyle, then the ratio is:

• Proteins - 25-40%
• Fats - 10-20%
• Carbohydrates - 40-60%

The specific amount of food and calories - each person must calculate independently, taking into account age, gender, physical activity and activity during the day.

It is considered the average norm for women - 2000-2100 Kcal, and for men 2600-2800 calories per day.

Children during their growth period should receive sufficient amounts of proteins, fats, carbohydrates and nutrients such as vitamins, minerals, etc.

If you look into history, then earlier people consumed twice as many calories as today. This is due to the fact that they led an active and extreme lifestyle, constantly moved, hunted, in general - "survived as best they could." Of course, they spent a large amount of body energy to maintain their existence. Today, many people work in offices and do not spend much energy, in connection with this, food rations have been significantly reduced. Formerly men consumed about 5000 kcal per day, and now 2 times less, so compare how the diet has changed today.

If guys and girls go in for sports or lead an active lifestyle, then their need is more by 500-1500 Kcal, depending on the intensity and loads.

Ordinary people, if they eat a lot a day and violate the established norms, they will gain weight, and perhaps even become obese. Therefore, it is necessary to adhere to the optimal calorie menu for the day.

Important components of proper nutrition and nutrients

• Proteins are the main building element for muscles. This does not mean that only athletes and bodybuilders should use it. For the health of an ordinary person, you need 1 gram per 1 kilogram of weight per day, if your weight is 50 kg, respectively, 50 grams. squirrel. During growth, the child needs 2-5 times more protein (2-5 grams per 1 kg of weight), because the formation of the body and growth takes place. The amount of protein at a time is 20-30 grams, because more will not be absorbed at a time. Consider this moment when compiling your diet, if you play sports.
• Fats are a reserve or reserve source of energy for the body. There are healthy and unhealthy fats. Healthy fats are good for your health and should be included in your diet. The necessary ones are found in fatty tuna, herring, mackerel, salmon and others.
• Carbohydrates are the main source of energy. There are "fast" and "slow" carbohydrates. As you understand, preference should be given to "slow" carbohydrates, they are more useful. A large number of consumption of carbohydrates, turns into subcutaneous deposits if the body does not absorb them at a time. And the risk of deposition in subcutaneous fat refers to "fast" carbohydrates. “Slow” carbohydrates are starch, glycogen, cellulose, they are found in buckwheat, rice, hard pasta varieties and much more.
• Vitamins and minerals play an important role in human health. Be sure to eat foods rich in vitamins and nutrients daily. Vitamins affect the growth and development of people, mental and physical performance, are involved in regulating metabolism and protecting the body from diseases, etc.