Diseases are not THE cause of evolution but play a role.
Let's start with tissue types -- we don't have different tissue types to prevent organ transplantation they are there because viruses use those receptors to get into cells. If we vary the lock no one virus is likely to have the key that wipes out the entire race.
As for cancer and cardiovascular disease (why omit the #1 killer?), evolution has balanced generation time and lifespan based on environmental factors. We usually live long enough to see our children fully grown. When hunting accidents, subsequent infections, plagues and parasites truncated life earlier, we evolved such that our hearts and tissues were unlikely to kill us before something else got us.
Improvents in sanitation and medicine changed all that. Life expectancy has doubled over just a few generations -- too few for our tissues to adapt to last beyond life expectancy. As cancer usually strikes after child bearing years, it's influence over future evolution will have as much to do with social structure and the importance of parents/grandparents as the survival of the individual.
2006-10-24 18:59:43
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answer #1
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answered by novangelis 7
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Evolve their own cure? If we stopped treating diseases we would evolve to be more resistent to them (because the people most vulnerable would die), but if you think diseases can evolve their own cure you clearly don't understand evolution.
In future, perhaps you should ask questions about evolution in the science category. This question has no religious or spiritual aspect.
2006-10-24 18:41:24
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answer #2
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answered by Anonymous
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Thats not quite how it works.
Created is the wrong word, think of it like making a big lego project, you start off small and shufle the blocks around to slowely build up the project, now there is a bed in the way, so you shufle the blocks around to avoid the bed but now you have to do some weird block possitions to make the patch.
Thats what cancer is, it is where some thing malfunctions and goes run away, it is your own cells malfunctioning not an out side occurance. Now as for diseases, they are their own life form, thus they work to stay alive, and our bodies work to kill them, thus it is a race of what can out do whom, as our bodies develup defences, they develup ways to side step thees defenses, the point of the bacterium is to live not die, the same point of our bodies, thus it is an ever going even't with no aim other then to be the one left living.
2006-10-24 18:36:16
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answer #3
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answered by Ponylover54 2
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Cancer is a result of DNA damage and thus, in a way, it is linked to "the cause of evolution" - DNA mutations (plus selection). We actually do have genes which suppress tumours and cancers. (By the way, imperfect design is evidence of evolution, not intelligent design).
But, importantly, aging DNA is far more susceptible to cancer than young DNA. Death aids evolution as the older generation stops breeding and disappears, leaving room, resources and sole reproduction opportunities to the younger generations. Without death in old age, evolution would be veeerry slow. Hence death in older age would have evolved (if it didn't exist from the start) as it gave organisms with it an evolutionary advantage over organisms without it.
Our species has actually evolved to live a long time relative to most animals, well past breeding age, as the older generation (eg. grandparents) are very important in society. Because they are wise. eg. in hunter-gather tribal societies, the eldest men bring in the vast majority of meat.
2006-10-24 20:45:38
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answer #4
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answered by Anonymous
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Cancer doesn't view itself as a disease, just as you don't view yourself as a disease to the millions of microbes your body destroys every day. So it's not going to "cure itself" of cancer any more than your body is going to shutdown to protect the microbes.
Bacteria evolves all the time. The rampant and incorrect use of vaccines and anti-bacterial agents have caused bacteria to evolve to the point that they are resistant to conditions that formally killed them. Virus' do it too, which explains how a virus like HIV or the BIrd Flu that was limited previously to birds or specific animals become capable of surviving in humans.
Some Cancers, like some forms of cervical Cancer, have become associated with communicable diseases, which is a sign that even complex life forms like cancer are evolving better methods of transmittal and therefore self-perpetuation.
2006-10-24 19:15:02
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answer #5
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answered by freebird 6
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Yes, they are. And... again... common sense would tell you that just because human beings haven't yet discovered the cure doesn't mean the cure doesn't exist somewhere on the planet already. Human beings don't know everything and are constantly in the process of discovering new things they didn't know before.
Logical and not exactly difficult to have figured out on your own.
2006-10-24 19:13:14
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answer #6
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answered by Anonymous
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"how come these diseases do not create/evolve their own cure??"
Umm... the same reason creatures haven't evolved with bombs inside them that randomly explode....
Evolution is all about survival, why the hell would something evolve a way to kill itself?
Not that it even applies anyway, cancer is not a species.
2006-10-24 18:51:24
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answer #7
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answered by The Resurrectionist 6
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phages ,they kill bacteria instantly
a russian science discovery
every bacteria has its phage ,unsure of the spelling
they look like squids
grasp the things and breed more that feed on the bacterial strain sort of the same way as virus works
they work quickly ,thus there isnt the money in them that medicine needs thus is it we still have disease
also light spectrums works ,and sonic vibrations
all disease could be gone but think of all the healers and drug merchants what would theyu do for cash
probably just make new virus like the bored computer programers are doing to make work/read that money.
huge money
2006-10-24 18:38:58
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answer #8
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answered by Anonymous
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NOT everything was created through evolution. That's a dishonest distorsion of the theory. If you are going to discuss the theory, please do so for what it IS. Do not make it up again, and then tell us the world is not like the 'theory' you've made up. Because we know that.
2006-10-24 18:54:18
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answer #9
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answered by Anonymous
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if we didnt treat these dieases, all people with cancer will be wiped out and all else left will be more likely immune to cancer... got it?
edit: if we gave it enough time, and cancer was so resistant,
all humans(animals) will die and several millions of years later, we might have cancer beings, breeding fresh animals for hosts...
(that was just an imagination)
conclusion: survival of the fittest.
2006-10-24 18:45:28
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answer #10
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answered by lnfrared Loaf 6
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