A distinction can be made between proximal ageing (age-based effects that come about because of factors in the recent past) and distal ageing (age-based differences that can be traced back to a cause early in person's life, such as childhood poliomyelitis).
physiologic. pertaining to physiology; normal; not pathologic. physiologic saline solution (physiologic salt solution) (physiologic sodium chloride solution) a 0.9 per cent solution of sodium chloride and water; it is isotonic, i.e., of the same osmotic pressure as blood serum. It is sometimes given intravenously to replace lost sodium and chloride.
Physiognomy is the association of certain personality traits to physical traits. A frequent practice under the umbrella of physiognomy was phrenology. Phrenology focused on the skull and brain. The driving belief in phrenology was that certain areas of the skull and brain pertained to various personality traits.