Lisiecka, M.Z. 2026. Obesity in Children and Adolescents, Prevalence and its Consequences on the Respiratory, Circulatory and Musculoskeletal Systems. International Journal of Child Health and Nutrition. 15, 4 (Aug. 2026), 256–268. DOI:https://doi.org/10.6000/1929-4247.2026.15.04.4.