First of all, it must be affirmed that physical activity capacity appears from birth and develops strongly between the ages of 0 and 13. This period is also considered by nutrition experts to be the golden period for the comprehensive development of children. Therefore, parents need to combine providing adequate nutrition and encouraging children to exercise to achieve optimal development.

Gastric ulcers in infants and children are often caused by Helicobacter Pylori infection, with common transmission routes being oral or fecal, through humans and flies. Gastrointestinal ulcers are also the result of an imbalance between aggressive and protective factors in the child's gastric mucosa.