[extropy-chat] evolution / selection of cells within a single body / lifespan

Ensel Sharon user at dhp.com
Mon Oct 30 04:30:26 UTC 2006



On Fri, 27 Oct 2006, spike wrote:

> > bounces at lists.extropy.org] On Behalf Of Ensel Sharon
> ...
> > ... the "athletes paradox" as it relates to aging (how athletes produce
> > more metabolism, and consume more calories, but seem to gain the same
> > benefits as those practicing calorie reduction, among other things) ...
> 
> This athlete's paradox does not seem paradoxical to my understanding of how
> CR improves health.  One benefit of both athleticism and CR is being thin.
> If one is thin, one does not waste one's limited supply of stem cells in the
> creation of useless and harmful flab, so there are more of them available
> for regenerating damaged tissues and for keeping one well.


Is that really how that works ?  I agree that one benefit of both CR and
athleticism is thinness, or more specifically, denseness.

But is it really a question of stem cell usage ?  I thought the number of
fat cells in our bodies were largely constant, and that it was just the
size of those fat cells that changed, growing much larger in obese
individuals.

Are you sure maintaining extra body weight causes a correlating depletion
of stem cells ?




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