Helicobacter pylori (Hp): This is the leading cause of gastritis and difficulties Gastric ulcer, tummy cancer. Eating improperly: eating out of meals, eating too fast, moving fast after you eat... Consuming too hot, freezing constantly. Drinking lots of liquor, alcoholic beverages irritates and eats away the nasal mucus in the stomach triggering inflammation, ulcers and blood loss in the stomach.