According to China's dietary guidelines, plant food accounts for about 3/4 of the total food. Plant food can provide us with some special phytochemicals, such as dietary fiber, vitamins, minerals and some antioxidants, while animal food can't. These special nutrients play an important role in human growth and health. According to the National Cancer Center, eating more fresh fruits and vegetables can significantly reduce the risk of cancer, such as liver cancer, colon cancer, pancreatic cancer, gastric cancer, bladder cancer, cervical cancer and ovarian cancer. Compared with people who don't eat fruits and vegetables often, people who eat fruits and vegetables are less likely to get cancer! In addition, calcium in vegetables is more suitable for human use than calcium in milk. Supplementing protein with vegetables instead of animal products can effectively reduce the loss of calcium, which is why vegetarians have stronger bones than meat eaters. In addition, vegetarian diet can reduce the acidity of human body, make human body weakly alkaline, lower cholesterol and blood pressure, and reduce the incidence of cancer. Vegetarian food can enhance immunity, reduce the burden on the liver and kidneys, and make the body more naturally balanced. Therefore, a diet based on plant food is the most beneficial to health and the most effective to control and prevent chronic diseases. A diet dominated by animal foods can lead to various chronic diseases. Such as heart disease, stroke and tumor. Carnivores are nine times more likely to be obese than vegetarians. The average life expectancy of vegetarians is higher than that of non-vegetarians 15 years. Vegetarians can effectively lower blood pressure and cholesterol, prevent stroke, improve arteriosclerosis, reduce the risk of heart disease by 50%, enhance the immune system and prevent various cancers.