How long does it take for stomach cancer to change from early stage to cancer?

The time from precancerous stage to carcinogenesis varies from person to person, ranging from several years to decades, mainly related to individual differences, lifestyle, lesion type, environmental factors, medical intervention and other factors. Some people may develop cancer in a short time, while others may take a longer time. For example, people with high genetic susceptibility may be more likely to develop gastric cancer faster. 2. Lifestyle unhealthy lifestyle is an important factor. Long-term smoking, alcoholism, high-salt and high-fat diet, irregular diet, etc. may accelerate the malignant process of gastric mucosa. For example, smoking will stimulate gastric mucosa and increase the risk of malignant transformation; unreasonable eating habits may continue to cause adverse stimulation to the stomach. 3. Type of lesion The specific type of gastric cancer in the early stage will also affect the malignant transformation time. For example, gastric mucosal intraepithelial neoplasia, high-grade compared with low-grade progression to cancer may be faster. 4. Environmental factors Pollution, pressure, etc. in the living environment may also play a role. Long-term exposure to harsh environment or high mental stress, high stress state, may affect the body's immune system and endocrine system, indirectly affecting the progression of gastric cancer. 5. Medical intervention, such as endoscopic resection, close monitoring and drug therapy, can delay or even prevent the occurrence of malignant transformation to a certain extent if the precancerous lesions of stomach can be detected in time. Regular gastroscopy and standardized treatment are essential to control the progression of lesions.