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Originally Posted by JC
Cancer is an inevitability, the longer you live the more likely it is you will get it. The only reason some people don't get cancer is because something else killed them first. You would need to stop cancer before you are going to get anywhere near those life expectancies.
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I wonder if prions would present a similar problem in a significant number of individuals. I seem to recall someone (a lecturer) telling me that prions are present in everyone, and that spongiform enchepalitis was an inevitibility in humans above a certain age, as certain mutants of prion merely take longer to cause it than others (e.g. those responsible for CJD).
http://en.wikipedia.org/wiki/Prion