The main factors that cause stomach cancer are given below:

Main causes of stomach cancer
Helicobacter pylori (H. pylori) infection: One of the main causes of stomach cancer is a bacterial infection called H. pylori that occurs in the stomach. It causes inflammation (gastritis) in the inner wall of the stomach and leads to cancer over time.

Dietary habits:

Excessive consumption of salty foods, dried fish, and pickles.

 

Processed meats, smoked foods, etc.

Low-fiber diet and very little consumption of fruits and vegetables.

Smoking and alcohol consumption: Smoking increases the risk of stomach cancer. Excessive alcohol consumption can also harm the liver and stomach.

Chronic gastritis: Long-term inflammation or ulcers in the stomach increase the risk of cancer.

Genetics: If your parents or siblings have had stomach cancer in your family, you may also be at higher risk due to genetic factors.

Overweight and age: Obesity is a risk factor for many types of cancer. The risk of developing this cancer increases with age (especially over 50 years of age).

 

Previous surgeries: People who have had previous surgery for other stomach conditions also have a small risk of developing stomach cancer.