Does the second law of thermodynamics cause aging?
Second law of thermodynamic and ageing

The second law of thermodynamic applies to closed system. Organisms are not closed system. The second law of thermodynamic is a fundamental principle of our universe and any biological processes do follow the principles of physics. However, stating that biological ageing is (partially) caused by the second law of thermodynamic suggests a big misunderstanding of what the second law of thermodynamic is.

To have a better understanding of the second law of thermodynamic, check up the wikipedia article or one of the many other sources of information on the subject and ask questions on Physics.SE if needed.

Ageing and its evolution

The evolution of ageing (or senescence) is a big subject and has already been subject of a large number of questions on Biology.SE. Have a look at the questions tagged . Below are two examples of post that will interest you:


Why do we age? or Do we have a theory of senescence?
Why does evolution not make our life longer?


There is also a wikipedia page on the evolution of ageing.

Note btw that biological immortality and negligible senescence do exist.