{Reference Type}: English Abstract {Title}: [The impact of health of mothers on health of children delivered by women 35-45 age old after application of auxiliary reproductive technologies]. {Author}: Kuzmichev KA;Tyumina OV; {Journal}: Probl Sotsialnoi Gig Zdravookhranenniiai Istor Med {Volume}: 32 {Issue}: 3 {Year}: 2024 May 暂无{DOI}: 10.32687/0869-866X-2024-32-3-391-395 {Abstract}: The treatment of women aged 35 years and older with infertility applies assisted reproductive technologies (ART) in every third case. The purpose of the study is to analyze impact of maternal health on health of children who were delivered by women aged 35 years and older after application of ART. The analytical, direct observation, sociological (questioning), and statistical methods were applied. To study health status of children born after application of ART methods in women aged 35-45 years, representative main group of 648 preschool children (4-6 years old) was selected. The second control group included 649 preschool children (4-6 years old), who were as identical as possible to children from the main group, selected according to following characteristics: mother's age at birth of child (35-45 years), age (from 4 to 6 years), all were observed in same medical organization, birth from a singleton, full-term (37 weeks or more) pregnancy. The main and control groups differed from each other only in presence or absence of ART methods. The children born preterm, from egg donor programs and multiple pregnancies were excluded from study. The children health was studied according to medical examinations, medical records, child development history, and mothers questionnaire data on children health. The course of pregnancy and childbirth, morbidity and lifestyle characteristics of mothers were studied according to their questionnaires and copies of data from their outpatient medical records. It was established that there is direct correlation between health of child and health of mother (r = 0.571; p < 0.01, t = 3). At that, it was revealed that differences in level of general morbidity of children after ART and children from spontaneous pregnancy are achieved within account of significant differences in subgroup of children of mothers aged 38-45 years (3353.7‰ and 2341.8‰ control group).