Hello I share your concern Bad food, spicy or adulterated food may cause inflammation of the lining of stomach and gastrointestinal tract. Natural way to cure ulcer or inflammation (gastritis) are as follows 1.Antiacidity medicines like pantoprazole or ranitidine group of drugs which is also available over the counter 2.Antacids or sucralfate syrup 10 ml thrice daily 3. complete avoidance of spicy and junk food or carbonated and caffeinated beverages 4. No smoking and alcohol consumption 5. plenty of fresh fruits and boiled vegetables 6. curd, yoghurt and dairy products help in healing. Hope this helps you, if it doesn t than you need to see a gastroenterologist for an endoscopy or ultrasound if need be. Thanks for your question, please do let me know if you have any more queries, I will be happy to help you. Best wishes