Teenagers are likely to get stomach cancer, although the high incidence age of stomach cancer is 60 to 80, but its cause is not clear, involving some risk factors will still increase the chance of stomach cancer, teenagers who have high risk factors for a long period of time, there is a possibility of stomach cancer. High risk factors of stomach cancer: 1. Nitrite and moldy diet: If a large amount of food with very high nitrite and moldy food such as pickled and smoked is consumed, it will greatly increase the risk of cancer. 2. Helicobacter pylori: studies show that those who are positive for Helicobacter pylori have a higher risk of stomach cancer. 3. Tobacco: No matter what age group you are, nicotine and other ingredients in tobacco can increase the risk of cancer. 4. Genetic factors: genetic mutations such as CDH1 can greatly increase the prevalence of stomach cancer. In addition to the above high-risk factors, the presence of some chronic gastric diseases in the stomach of teenagers, coupled with excessive psychological pressure and other reasons, can increase the risk of stomach cancer. If you feel sick in stomach and intestines, it is recommended to consult a doctor in time.