On February 15, 2024, K.D. Abaeva, assistant at the Department of Propaedeutics of Childhood Diseases of the NAO MUS. a seminar was held through a ZOOM conference for nurses of medical institutions in Semey, Pavlodar on the topic: “Rational nutrition of young children.” Of all the environmental factors that influence human health, nutrition plays a leading role. Breast milk is the best and only nutrition that nature has created for a newborn baby. Mother’s milk is not only all the necessary nutrients in the right quality and quantity, which will ensure good growth and proper development of the baby. Breast milk is the mother’s ongoing care and protection from a foreign, sometimes aggressive environment for which the baby is not ready. The baby will need mother’s support in the form of breastfeeding during the first year of life, until his immune system learns to recognize and fight all the harmful bacteria that surround him. However, it happens that there is no breast milk or not enough. Then the child has to be offered artificial feeding. We need to approach this issue rationally. All these pressing issues were reflected during the seminar. At the end, the lecturer answered questions of interest to the audience. In her concluding remarks, Kadisha Dissumbekovna once again emphasized the basic principles of rational nutrition for young children.