ENTROPY PRODUCTION IN HUMAN LIFE-SPAN - A THERMODYNAMICAL MEASURE FORAGING

From the human entropy production per surface area obtained in a previ ous study, entropy productions per human individual of various ages ar e calculated. It is shown that the entropy production increases from b irth to about 16 years of age for males and to about 14 years of age f or females, and then gradually decreases afterwards. Th is two-stage p rinciple characteristic of entropy production (the early increase and the later decrease) does not accord with the well-known minimum entrop y production principle. The ''two-stage principle'' will be universall y applied to aging over the life span of humans and other animals.