Gastritis and gastroesophageal reflux disease (GERD) affect an increasing population. Although they do not cause mortality, these diseases are more than dangerous. Some of the complications they cause are: esophageal cancer, gastric cancer, Barrett's esophagus, MALT syndrome. Diseases like these have a significant impact on an individual's quality of life and should therefore be prevented or treated in a timely manner. The aim of this thesis is to educate the population about diseases, possible ways of prevention and treatment. Also with this work I want to encourage all health staff to promote prevention, provide assistance and point out the importance of treatment among patients and between each other. I would like to emphasize the importance of the change in the guidelines for the treatment of the disease and the pertinence work with the patient. Risk factors such as alcohol, smoking, caffeine, stress, inactivity and improper diet not only affect the digestive system but also the whole body. Emphasizing the importance of self-care is one of the most important facts highlighted in this paper. The results entailed responses from 167 study participants and showed that there are several factors influencing the development of gastritis and gastroesophageal reflux. The results obtained show that there is an association between the development of GERD and sex, but not between the development of gastritis and sex. It has been proven that there is a connection between smoking and the development of GERD, but not between the development of gastritis and smoking. Among other factors, it has been proven that the implementation of weekly physical activity does not affect the development of gastritis, but affects the development of GERD. Gastritis and GERD are diseases that are growing in number around the world. With each of our inactions as health professionals, we attach to this number and question the importance of our profession. We need to emphasize every day; preclude before treatment, prevention always comes first.