A man is not old until regrets take the place of dreams. ~John Barrymore
In the
previous article I showed that despite all the fanfare of increased
lifespan, we actually haven’t made a lot of progress, if any at all. The
perceived extended lifespan is pretty much due to a few factors, lack
of a world war for recent generations (therefore not killing off
horrific numbers of young people), huge investment in palliative care, and earlier diagnosis of disease, leading to earlier use of the previous item in this trio.
Again
with all the talk of ageing, I haven’t seen, correct me if I’m wrong, an
accurate description of what ageing actually is in the popular media.
Even in general discussion, I still hear from pretty much 99.99 % of all
people that they think people can die of old age…
Let me
state this very clearly, nobody has ever died of old age. The
chronological passing of the illusion that we call time, has never
caused anyone to die. We don’t even really have a concrete theory on
what time is yet, let alone its influence on human life.
So what
is ageing? Ageing is simply two things, disease and damage. When
anybody dies it is simply that either disease and/ or damage have got to
a point where it can’t be repaired or be endured by the organism.
So to
stop ageing, we need to focus on two things, preventing the damage
occurring in the first place, and if the damage has occurred repairing
the damage. Simples.
To the extent that you achieve the above two points, you can, hypothetically, live indefinitely.
Don’t
believe me? Nearly 15 years ago, scientists achieved this in a lab with a
nematode (roundworm) called Caenorhabditis elegans. I’ll get back to this in a moment.
You, yes you, are essentially an immortal anyway. The
germ cells that are in you, are the essentially the DNA from the very
first primate, and is still going strong. These germ cells are what are
used in sexual replication, and are the only cells that can undergo
meiosis (essentially the combination of the DNA from Ovum and Sperm,
it’s a little more complicated than that, but that will suffice here),
as well as mitosis (normal cell division). Most of the other cells in
your body that you are made of are called somatic cells, these can only
undergo mitosis.
For
these germ cells to essentially achieve immortality they need to pass
on accurately their information encoded in the genes. To keep this
information accurate, they need to guard its very precise sequence from
any disruption. The germ cells have learned to do this very well; if
they had not, you would not be here. So what does this have to do with
worms?
Well,
scientists looked at a few tricks that germ cells performed on
maintaining their genetic meticulousness and applied it to the somatic
cells in the aforementioned c. elegans. Guess what happened? Even with
the limited knowledge we have of the techniques of the germ cells, the
ones applied allowed a tripling of the roundworms lifespan. That would
see a human living 200 years.
You can read a story about the research here http://news.harvard.edu/gazette/story/2009/06/researchers-learn-how-mutations-extend-life-span/
So
genetic engineering can allow vastly extended lifespan, although I
wouldn’t advise undergoing the procedure, even when it becomes
commercially available. You
can’t just manipulate a gene and expect it to have one outcome, your
body is an interconnected system, it’d be like falling dominoes.
In the absence of genetic engineering, what can we do? Plenty.
Nature has dealt us a loaded hand; we’ve just forgotten to respect the game. The
game has a number of rules, of which I’ll focus on in upcoming
articles, and as I promised I’ll point you in the right direction on how
to tactically push the boundary but stay within the laws of the game.
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