Is it true that gastritis caused by autoimmune disorders ,h.pylori , alcohol or bile reflux lead to cancer? while gastritis due to other causes don't lead to cancer?

Many factors, including lifestyles, diet can lead to stomach cancer. H pylori is felt to be a predisposing factor as is autoimmune and gastric atrophy seen in pernicious anemia from achlorhydria.

Cancer is the result of multiple factors. Any item that caused inflammation can cause cancer. Heredity plays a large role in stomach cancer. You can reduce your risk of cancer by adopting healthy habits: Eat a mostly vegetarian diet, avoid alcohol, tobacco and street drugs, avoid excessive exposure to sun, maintain healthy weight, get HPV vaccine, exercise 30 minutes each day, drink enough water