An Observational Study on Gastric Cancer in High-risk Individuals

Exclusion Criteria

• •1. A history of diagnosed gastric cancer or other malignant tumors of the digestive tract.
• •2. Comorbid severe underlying conditions (e.g., severe cardiopulmonary insufficiency, liver or renal failure, etc.) that are likely to result in a short life expectancy or render long-term follow-up impractical.
• •3. Severe mental illness or incapacity to participate in the study due to lack of civil behavior.
• •4. Pregnant or breastfeeding women.
• •5. Other conditions that the investigator deems inappropriate for participation in the study.