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At the first, introductory lecture, we noted that hygiene is a science that studies the influence of environmental factors on the human body and develops measures to prevent the harmful effects of the environment and the development of diseases.

Environmental factors that have a permanent impact on humans include, above all, air, water, soil. It is known that the human body is in constant interaction with the environment and this is manifested primarily in the generality of their chemical composition and the constant dependence of the conditions of human existence on the physical conditions of the external environment. Since all environmental factors — chemical, physical, and biological — are in constant development, this has a direct effect on one of the essential features of the human body –adapting to minor changes in environmental factors, i.e. body's ability to adapt. However, the adaptive capabilities of the human body are not unlimited. Minor changes in environmental factors, as a rule, do not cause painful phenomena in humans, and, on the contrary, significant deviations of environmental parameters from the requirements of the human body can lead to various functional changes in the body and ultimately to the development of diseases.

In this regard, environmental health has two main objectives:

1) determine the optimal environmental conditions for human life;

2) limit or eliminate the harmful effects of the environment on the body, i.e.
bring the external environment in accordance with the requirements of the human body.

At the same time, evaluating the influence of various environmental factors on the human body, they usually single out the predominant factor, which in its parameters has the greatest deviation from the requirements of the human body (for example, elevated air temperature or dustiness).

The relevance of the study of this topic lies in the fact that the catering process engineer, in his practical work, on the basis of knowledge of the influence of environmental factors on the human body, it is necessary to create optimal conditions for visitors and production workers of the enterprise. In addition, taking into account a number of environmental factors when organizing the transportation, storage and sale of food products and prepared food is of no small importance.
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  1. The value of protein in human life
    The properties of a protein depend both on its composition and on the location of amino acids in the molecule. Moreover, the order of amino acids in the protein molecule plays a very important role in the performance of their functions. Amino acids synthesized in our body are called interchangeable. Some amino acids do not form in the human body - these are essential amino acids. Proteins containing the entire set of essential amino acids,
  2. Disclosing the secret of life - importance for medicine and oncology
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  3. Hygienic requirements for the choice of territory for the placement of populated areas. The value of climatic conditions and environmental conditions
    The choice of territory for the construction, expansion or reconstruction of urban and rural settlements is one of the crucial stages of preventive sanitary supervision. It should be noted that further living conditions and public health depend on the correctness of the solution to this issue. Therefore, for the placement, design and construction of settlements, their individual parts or objects
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    The cause of any disease inside the cell or cells is at the level of DNA and protein molecules. In the future, the causes of diseases will be detected at the level of atoms and their electronic shells. Currently, disorders in the molecules of DNA and proteins of a cell or cells are the true cause of any disease. To understand the disease, its early diagnosis and cure, it is necessary to know their molecular causes. But this is before
  5. The value of air to humans. Representation of the atmosphere. The composition of the air. Regulatory requirements for the air environment of classrooms
    The air environment that makes up the earth's atmosphere is a mixture of gases, which contains 27 gaseous substances. All aerobic creatures need air to breathe. Breathing is the process of obtaining energy by every living cell. In the atmosphere there is a constant cycle of these gases, so the composition is constant. But the composition of atmospheric air can change mainly due to
  6. Nutrition as a factor in maintaining and strengthening health. Physiological nutritional standards. The importance of the individual components of food in human nutrition. The importance of proteins in human nutrition, their norms and sources of entry into the body
    Nutrition is one of the most active and important environmental factors that has a diverse effect on the human body, ensures its growth, development, preservation of health, working capacity and optimal life expectancy. All this is provided by a daily, regulated meal with a certain set of food products. Food products are complex
  7. Atmospheric air as an external environment. The complex effect of meteorological factors on the human body. Meteotropic reactions
    Atmospheric air is one of the most important components of human ecology. In the process of his life, a person constantly comes into contact with many factors of the external environment in which he lives, and these factors, of course, have a certain effect on the human body. One of the factors with which a person comes into contact most closely is the air environment. Air
  8. The value of fats, carbohydrates and minerals in human nutrition. The norms of these food components and their sources of entry into the human body
    As already mentioned in the previous lecture, fats are substances that perform mainly an energy function in the body. In this regard, fats are superior to all other food components (carbohydrates and proteins), since when they are burned, 2 times more energy is released (1 g of fat forms 9.3 kcal, while 1 g of protein and the corresponding amount of carbohydrates are only 4, 3 kcal). However biological
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