The four major aspects of human health proposed by WHO belong to

Health means that a person is in a good physical, mental and social state. Health includes two aspects: first, the main organs are disease-free, the body shape develops well and evenly, the physiological functions of various human systems are good, and there is strong physical activity and labor ability, which is the most basic requirement of health; Second, it has strong disease resistance and can adapt to the effects of environmental changes, various physiological stimuli and pathogenic factors on the body. The traditional concept of health is "disease-free health", while the modern concept of health is overall health. The World Health Organization puts forward that "health is not only the absence of physical diseases, but also mental health, good social adaptation and morality". Therefore, the health of modern people includes: physical health, mental health, mental health, social health, intellectual health, moral health, environmental health and so on. Health is a basic human right. Health is the first wealth in life.

The preliminary definition of human health engineering is: it is an understanding and method of treating human life (respecting human beings themselves) based on system theory, and it is a systematic engineering with people as the center and the goal of maintaining and improving the stability level of human system. Its connotation is not limited to engineering technology, but an open synthesis of humanities and technology. Specifically, it can be described as: "human life is an open and powerful self-organizing system, which has the self-organizing adjustment function of spontaneously moving towards the goal of orderly structure, reaching a healthy physical and mental state and adapting to environmental variation, and the self-organizing function of the body when it is sick is reflected in the self-repairing function of eliminating pain; All chronic diseases, including cancer, stem from the steady-state imbalance and instability caused by long-term overload stress response, so chronic diseases are a partial embodiment of the overall imbalance; It is an effective way to deal with chronic diseases by cutting off the stress source of overload, changing the state of physical and mental disorder into a state of coordination and rebuilding the self-organization function. "

It can be seen that coping with various non-communicable diseases (NCD), including cancer, maintaining and promoting health, adapting to the environment and giving full play to human potential all belong to the category of human health engineering.

At present, the main goal of human health project is to solve the NCD problem, and on this basis, further develop and integrate various factors conducive to the return of health, and make contributions to more comprehensive and in-depth medical reform.