The age of human body includes psychological age, physiological age and actual age. Physical age refers to the age corresponding to the physical health, the functions of various organs and the overall functional level, and is the overall evaluation index of the body.
The physiological age should be consistent with the actual age and psychological age, but if the body has obvious diseases, the physiological age will be significantly higher than the actual age. In addition, patients with a history of mental illness may have different physical age and mental age, and their physical age may be significantly greater than their mental age.