In recent years, the dietary structure of urban and rural residents in China has changed greatly, and the quality of diet has improved significantly and the health level has been improving, but at the same time, the prevalence of chronic non-infectious diseases related to diet has also increased significantly. 1, smoking, excessive alcohol consumption and esophageal cancer, pancreatic cancer, alcoholic liver disease In 2002, China’s nutrition and health survey showed that the proportion of Chinese residents drinking alcohol was 21%, compared with 1991, an increase of 17.3%, of which, the proportion of those who started drinking before the age of 18 was as high as 8.8%. The World Health Organization (WHO) reported that 20%-30% of esophageal cancer and liver diseases worldwide are caused by alcohol consumption. The analysis of pancreatic cancer cases from 1985-1991 (78 cases) and 1995-2001 (194 cases) by Qian Jiaming et al. showed that the incidence of pancreatic cancer tends to increase year by year, and the patients are mainly middle-aged and elderly, with men being more common. Lu Xinghua et al. conducted a case-control study and collected 119 cases of pancreatic cancer patients and 238 control cases between 2002 and 2004, and found that heavy smoking and alcohol consumption, meat consumption, and history of diabetes were risk factors associated with pancreatic cancer in the Han population. 2, fried and pickled foods and gastric cancer, colorectal cancer, gastroesophageal reflux disease Large-scale meta-analysis showed that the dietary risk factors for the development of gastric cancer in our population are: overeating, irregular meals, fried foods, hot food, dry and hard food, heavy salt food and alcohol consumption, etc., while drinking tea, eating garlic and fresh vegetables can reduce the occurrence of gastric cancer. It has also been found that frequent consumption of fried, smoked, salted and salted foods can increase the relative risk of colon cancer (OR), which is due to the presence of many heterocyclic compounds in fried and smoked foods, and the high content of nitrosamines in salted and salted foods, which have special effects on the colon mucosa and can induce the formation of malformation sockets, which are precancerous lesions of colon cancer. The incidence of gastroesophageal reflux disease (GERD), which used to be less than 1% in China and is mostly seen in Western countries, has also become popular in China in recent years. Surveys in Shanghai and Beijing show that the prevalence of GERD in the normal population is around 8%, and there is an increasing trend. Do not eat breakfast and gastritis, peptic ulcers, gallstone disease and constipation Recent surveys show that the proportion of Chinese residents do not eat breakfast up to 3.2%, especially young people in the city, the proportion of not eating breakfast is 4.6%. Do not eat breakfast, the human digestive system biorhythms, gastrointestinal motility and digestive juices secretion changes, digestive juices did not get food neutralization, will produce adverse stimulation of the gastrointestinal mucosa, causing gastritis, serious cases can also lead to peptic ulcers. In addition, in the morning fasting, the saturation of cholesterol in human bile is high, eating breakfast is conducive to the gallbladder bile discharge, on the contrary, it is easy to make the cholesterol in the bile precipitation and the formation of stones. British scholars of women suffering from gallstone disease investigation found that gallstone disease and long-term failure to eat breakfast related. Moreover, in the case of 3 meals at regular intervals, the human body will produce gastrointestinal reflex phenomenon, long-term skipping breakfast may cause this reflex dysfunction, resulting in constipation. British scholars on women with gallstone disease found that gallstone disease is related to long-term failure to eat breakfast.