Domestic research on sub-health is mostly limited to cross-sectional surveys, and most of the tools used are self-rating scales or questionnaires. These surveys involve teachers, civil servants, enterprise personnel, community residents, medical staff and other different groups. Due to different definitions of sub-health and different questionnaires or scales, the detection rate of sub-health reported in various studies is also quite different, mostly between 20% and 80%.
The detection rate of sub-health varies with gender, age and occupation, which has nothing to do with birthplace and nationality. Generally, the detection rate of women is higher than that of men, and the age group of 40-50 is higher than other age groups, especially teachers and civil servants. The main reasons leading to sub-health are: unreasonable diet, irregular work and rest, lack of sleep, mental stress, great psychological pressure, long-term bad mood and so on.
The main characteristics of sub-health include: ① symptoms reflected by physical and mental discomfort, such as fatigue, weakness and emotional changes. , and its situation is difficult to clear for quite some time; (2) various weak manifestations caused by the decline of organizational structure or physiological function that is not suitable for age; ③ Microecological imbalance; ④ Pre-disease physiological and pathological changes of some diseases.