What does sub-health mean?

Sub-health is a condition between health and disease. This kind of patient can not meet the standard of health, but does not meet the clinical symptom standard of disease. Sub-healthy people can generally be divided into three types: physical sub-health, psychological sub-health and social communication sub-health, and then may show fatigue, fatigue, listlessness, memory loss, dizziness, headache, sleep disorder, loss of appetite, diarrhea, constipation, sexual function decline, immunity decline, depression, slow reaction and other symptoms, at the same time may also be accompanied by different degrees of tissue structure physiological function decline, body micro-environment imbalance phenomenon.