Since the time of Darwin, evolutionary biologists have wondered why the lifespans of different species vary so significantly. A new model now suggests that the life expectancy of any given species is a function of evolutionary pressures — a conclusion that hints at the potential for powerful anti-aging interventions in humans.
I always take issue with lengthening the human lifespan. The inevitable competition for resources, considering that population growth is [currently] logarithmic. Resources includes jobs – locally, we have seniors competing with teens for jobs because the seniors don’t have enough accumulated via investments or a pension. Then there’s the question: will long life be a matter of quantity vs quality? At some point I will have to surrender my drivers license (assuming cars aren’t self-driving), but being unable to look after myself is not what I consider “living”.
The article does not mention:
- telomeres, which are generally regarded as an indication of mortality
- species lifespan in the wild vs captivity