Gastric cancer is a serious disease whose occurrence is influenced by various risk factors. The main risk factors include infection with Helicobacter pylori bacteria, smoking, consumption of processed foods, and genetic predisposition. Prevention of gastric cancer can be achieved through a healthy lifestyle, including a balanced diet rich in fruits and vegetables. Treatment depends on the stage of the disease and may include surgery, chemotherapy, or a combined approach. The patient's prognosis varies depending on the time of diagnosis and the extent of the disease at the time of detection.