Eating barbecue frequently may lead to stomach cancer. One of the carcinogenic factors is that barbecue itself is burned and charred food, which will denature proteins and form some carcinogenic substances, such as aromatic hydrocarbon carcinogens, which are currently recognized by the World Health Organization as carcinogenic factors that can lead to stomach cancer. If you eat barbecue for a long time, combined with drinking and overeating habits, it will form a chronic inflammatory stimulus to the stomach. Such inflammatory irritation can form mucosal damage in the stomach, resulting in chronic erosion, bleeding and ulcers. If left untreated or without changing bad habits, chronic inflammation and irritation will persist, which may lead to the onset of carcinogenic factors in the body after 10-20 years and eventually form gastric cancer. Therefore, long-term barbecue and poor nighttime diet are cancer-causing factors in life, and it is recommended to abandon such habits.