Tuesday, 1 March 2011

The simple way towards a long and happy life (Part 2 of 7)

All animals expire at a certain point and we take for granted that Nature has foreseen a particular lifespan for each species, but is this really true? Could science extend man's life and push death away, decade after decade, allowing individuals to become a hundred years old before their final demise?

The world shows many examples of men and women who have lived longer than a century. What prevents us from transforming their exceptional longevity into a general rule that would be applicable to all citizens? Nowadays, even if we could eliminate accidents as a cause of death, we would still be left with epidemics such as cancer and cardiovascular disease. Will they ever be eradicated?

Scientists have put forward many different theories to explain why animals die but, during the last sixty years, most of those hypotheses have been abandoned due to insufficient evidence. The two theories that have remained are considered, in the present stage of knowledge, as work in progress which, so far, seems to be pointing in the right direction.

To be continued in Part 3

[Text: http://johnvespasian.blogspot.com]

[Image by jnorton under Creative Commons Attribution License. See the license terms under http://creativecommons.org/licenses/by/3.0/us]