I've said it before and I'll say it again. The longer we expand our lifespan as individuals the shorter our lifespan as a race becomes. All things in nature work on balance, for what is given an equal portion must be lost. We have already tipped this in the wrong direction. I would hope my grandchildren at least would have sucked enough of my morals out to not fear mortality and join me in Valhalla when the time is right rather than running to doctors in fear of their fate.

Do I believe our fear will prompt science to make it possible to live 250 years? Yes.
Do I think my descendants will do so or should do so? No.

I can't think of some one that old...I may wish they will live up to 110 years.

250 year life span, yikes. I would want any person, relative, friend or stranger to live a long healthy and productive life, but if the sacrifice for that lifespan is one filled with pain agony and suffering, then no, I would not want them to live 250 years.

In short, 250 years, yes if they are full productive years, no, if they are just spent in pain.

I don't see that happening. A rise of 30 years in the last hundred doesn't mean that in the next 100 years life expectancy would rise another 170 years. That would be more then three times the life expectancy of a person now. Even with great advances, I don't think anything near that will be achieved.

I really like the last sentence in the article you referenced, "theorist's prediction that the average human lifespan could reach 5,000 years within the next century". I will ask that follow up question based on that statement.

Here is a chart of life expectancy since 1900:

Nope, I think it will peak out at abut 120 years, because of telomerase degredation.

We can do things to reduce lipofuscan accumulation and accumulation of heavy metals, but so far we haven't found a way to stop telomers from degrading, which caps lifespan at 120 year.

We'll get it up to the point where people maintain a standard of health about equal to in the early 30's, and we bebop through life, then on day around 120 we start to feel sick, and five days later... we'll be dead.

the Average life span in the 23 century will more or so if first we do not destroy our self. Even we survive to that period and advance in our so called Physical life span. i do not think that it is impossible.
because in the indian Saga Mahabharata there are the account that the man live for more than 450 years or so
then it is not so strange. but r we only focusing only on the physical life or the material but what about the spiritual life. the spiritual life is more than the eternity. so can the humanity be advance from the physical to the spiritual life span and the well being in that matter.

i understand that the spiritual life is more subtler than the physical. but in eastern philosophy we take the birth to advance in the spiritual path. so even we live to 250 year that only to serve the spiritual aspect of the being.

No. Because it's estimated I will live to be 80 years old. My children could live to be 120 years maybe, but their children should be able to live maybe 150-170 years old.

250 is a really really big jump from that. So no, I find it very doubtful and who wants to live to be 250? Even if you unlock all the anti-aging secrets, you can't avoid bone density loss for centuries. And in my answer I am not including the possibility of transferring memories to cyborg host bodies, cause that would mean you could live forever and you wouldn't have to worry about brittle bones and arthritis.

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Indefinite lifespan is a term used in the life extension movement to refer to the longevity of humans, and other life-forms, under conditions in which aging can be effectively and completely prevented and treated. Such individuals would still be susceptible to accidental or intentional death by trauma, but not death from aging. Their lifespans would be "indefinite," because protection from the effects of aging on health does not guarantee survival. The term "indefinite lifespans" is often considered to be technically correct by some life extensionists, as opposed to terms such as "immortality" which imply, especially in religious contexts, an inability to ever die.

Is indefinite lifespan possible?

This question is twofold. On the one hand it can be interpreted to mean, "Will a cure (or program of effective treatments) for aging ever be developed?" while on the other hand it could mean "Will the effective treatment of aging become available soon enough for those alive today to take advantage of it?" The answer to the first question is conditional on medical advancement: if medical science continues to advance in the fields of biogerontology and bioengineering, then some people hope the answer is "yes, that it will happen eventually, excepting if some event or series of events were to prevent the further advance of biological science" (see Nuclear warfare and the Doomsday Clock). Scientists researching this area at the moment do not agree. They see a problem in not just individual diseases but in failure of repair mechanisms alluded to above in the discussion of thermodynamic considerations.

While science is constantly advancing and technology is becoming ever more sophisticated, the human body and mind are finitely complex and have not changed significantly in one hundred thousand years, and the aging process has not, in that time, become any more damaging (which, in short, is why we live three times as long on average in the twenty-first century as we did ten thousand years before).

The answer to the second question depends on two factors: the first being how fast medical science advances, and the second being how well each person takes care of themselves (such as utilizing the best available life extension technology or not, and generally eating and behaving in a healthful and non-degrading way), both of which may affect whether or not a given person is still alive when the cure (or set of treatments) becomes available. This strategy is captured in the subtitle "Live Long Enough to Live Forever" of the popular life extension book Fantastic Voyage, by Ray Kurzweil and Terry Grossman, M.D.

It should be noted that the second factor to the second question hinges on the first factor - no amount of healthy living will enable somebody alive today to reach the point of indefinite lifespan if medical science is curtailed significantly, or if aging turns out to be massively more complex than presently believed. However, if biomedical gerontology continues to improve, if somatic genetic engineering becomes safe and effective (and is not banned by opponents) within the relatively near future, it may be conceivable for some of those alive presently to attain indefinite lifespans.
-- /quote --

Based on the above, my answer is yes, I believe my grandchildren will live more than 250 years! (I'm confident in scientific advances)