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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" article-type="research-article" dtd-version="1.1d1" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher">Молодежный инновационный вестник</journal-id><journal-title-group><journal-title>Молодежный инновационный вестник</journal-title></journal-title-group><issn publication-format="print">2415-7805</issn><publisher><publisher-name>Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный медицинский университет имени Н.Н. Бурденко" Министерства здравоохранения Российской Федерации</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">9391</article-id><article-categories><subj-group subj-group-type="heading"><subject>Unclassified</subject></subj-group></article-categories><title-group><article-title>The possibility of correcting cognitive impairment with vitamin B12</article-title></title-group><contrib-group><contrib contrib-type="author"><name name-style="western"><surname>Burka</surname><given-names>Angelina Andreyevna</given-names></name><bio>&lt;p&gt;3rd year student of the Pediatric Faculty of St. Petersburg State Pediatric Medical University&lt;/p&gt;</bio><email>burkaangelina010203@gmail.com</email><uri content-type="orcid">https://orcid.org/0009-0005-3309-7798</uri><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author"><name name-style="western"><surname>Leshchenko</surname><given-names>Iuliia Alexandrovna</given-names></name><bio>&lt;p&gt;3rd year student of the Pediatric Faculty of St. Petersburg State Pediatric Medical University&lt;/p&gt;</bio><email>juliialeshchenko007@gmail.com</email><uri content-type="orcid">https://orcid.org/0009-0009-7909-8701</uri><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author"><name name-style="western"><surname>Mirzoyan</surname><given-names>Anna Norayrovna</given-names></name><bio>&lt;p&gt;3rd year student of the Pediatric Faculty of St. Petersburg State Pediatric Medical University&lt;/p&gt;</bio><email>mirzoyananna@bk.ru</email><uri content-type="orcid">https://orcid.org/0009-0004-2031-7723</uri><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author"><name name-style="western"><surname>Tadtayeva</surname><given-names>Zara Grigorievna</given-names></name><bio>&lt;p&gt;Doctor of Medical Sciences, Professor of the Department of Pharmacology with a course in Clinical Pharmacology and Pharmacoeconomics at St. Petersburg State Pediatric Medical University&lt;/p&gt;</bio><email>tadtaeva2003@mail.ru</email><uri content-type="orcid">https://orcid.org/0000-0002-5809-1457</uri><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff id="aff-1">St. Petersburg State Pediatric Medical University</aff><pub-date date-type="epub" iso-8601-date="2024-04-19" publication-format="electronic"><day>19</day><month>04</month><year>2024</year></pub-date><volume>13</volume><issue>S1</issue><fpage>547</fpage><lpage>547</lpage><history><pub-date date-type="received" iso-8601-date="2024-02-12"><day>12</day><month>02</month><year>2024</year></pub-date><pub-date date-type="accepted" iso-8601-date="2024-05-10"><day>10</day><month>05</month><year>2024</year></pub-date></history><permissions><copyright-statement>Copyright © 2024, Burka A.A., Leshchenko I.A., Mirzoyan A.N., Tadtayeva Z.G.</copyright-statement><copyright-year>2024</copyright-year></permissions><abstract>&lt;p&gt;Resume. In the Russian population, there have been practically no studies on the effect of vitamin B12 deficiency on cognitive functions. The relevance of the study is due to the increasing number of cognitive impairments and the tendency to rejuvenate diseases. One of the factors of cognitive decline is vitamin B12 deficiency. The purpose of this study is to find modern and timely opportunities to correct cognitive impairments that occur against the background of cyanocobalamin and folic acid deficiency by sharing these missing vitamins during treatment. Materials and methods. A search of literature sources was carried out in order to identify the possibility of correcting cognitive impairment with vitamin B12, as well as to identify the relationship between the level of cognitive impairment and vitamin B12 intake in respondents. Results. Three groups of respondents were identified, among which cognitive functions were assessed. The relationship of vitamin B12 and B9 deficiency with the level of cognitive impairment and lifestyle has been determined. Conclusions. The model of interaction of the metabolism of vitamins B12 and B9 in the human body, occurring in the folate cycle, has a complex effect on many processes in the body, including brain activity manifested by higher nervous activity (memory, attention, etc.). A relationship has been found about the effect of cyanocobalamin and folic acid on cognitive activity of the brain and psychogenic manifestation deficiency conditions of these vitamins, as well as the effect of bad habits, such as smoking, on the absorption of these vitamins and the depletion of their internal reserves in the body. The relationship between homocysteinemia and the metabolic processes of vitamin B12 and folic acid has been established through their joint interaction in the folate cycle, during which methionine is synthesized from homocysteine. Along with the development of the popularization of complex vitamin therapy in medical practice, this work proposes to place not only a significant emphasis on preventive and timely treatment with vitamin preparations, but also to highlight the problem of vitamin deficiencies among the population.&lt;/p&gt;</abstract><kwd-group xml:lang="en"><kwd>vitamin B12</kwd><kwd>folic acid</kwd><kwd>cognitive functions</kwd><kwd>homocysteinemia</kwd><kwd>deficiency conditions</kwd><kwd>vitamin therapy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>витамин В12</kwd><kwd>фолиевая кислота</kwd><kwd>когнитивные функции</kwd><kwd>гомоцистеинемия</kwd><kwd>дефицитные состояния</kwd><kwd>витаминотерапия</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Неврологические расстройства при дефиците витамина В12 / Ч. С. Павлов, И. В. Дамулин, Ю. О. Шульпекова, Е. А. 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