I. What is health Modern human health includes: physical health, spiritual health, intellectual health, mental health, social health, moral health, and environmental health. Health is the basic right of human beings and one of the most valuable assets of life; health is the basis of quality of life; health is an important aspect of human self-awareness; health is the best state of life existence and has rich and deep connotation. With the development of society and the improvement of people’s quality, the demand for health care is also increasing. Please imagine, if the whole Chinese people reduce the occurrence of diseases because of disease prevention, and each person saves 1 yuan, then how much medical expenses should be saved?1.3 billion! And the savings in manpower and material resources, etc. Second, the purpose of health care Instead of saving treatment after the disease, it is better to take care of the disease. One point of prevention is better than twelve points of treatment, prevention of disease in the future. Chinese medicine advocates: treat the disease before it happens. No brilliant doctor can restore a patient to his or her pre-disease state. A good doctor is not to cure the patient, a good doctor is to keep people from getting sick, a good doctor is to let people live a healthy and happy life. Whenever and wherever possible, prevention of disease is more important than cure. The concept of health is a concept of physical and mental health. With the progress of science and the development of society, human knowledge of nutrition and health has increased substantially. Our economy has developed and our material living standard has improved, some people are dying prematurely instead. Some people think that cardiovascular disease, cerebrovascular disease, diabetes are all caused by economic development and improved living standards, wrong! Very wrong! These diseases are caused by poor health knowledge and wrong lifestyles. So to speak, many people do not die from disease, but from ignorance, from ignorance. Third, the essence of health is to maintain the balance of life’s yin and yang, yin and yang balance is the essence of life, if yin and yang is balanced, then our body can be healthy, if yin and yang imbalance, then it will be sick, it will prematurely decline, yin and yang from the decision will die. Sixteen words of health care policy: reasonable diet, moderate exercise, quit smoking and limit alcohol, psychological balance, reasonable diet. Sun Simiao, a great medical scientist of the Tang Dynasty, said, “The essence of health must be funded by diet, and those who do not know what is appropriate to eat are not enough to survive.” The dietary contraindications are reflected in various aspects such as physical, geographical, seasonal, age, medical condition, as well as dietary preparation, usage and dosage.