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David Gems: We’ve been studying aging and death because we want to understand it. Aging is probably the biggest unanswered question in the science world. When people get seriously ill these days, it’s generally from aging—so aging is a disease. We study it in worms, not because we care about aging in worms particularly, but because it's too difficult to study it in people. If you can understand aging in one animal properly that’s a good start.Specifically what we found was when worms die, there is this phenomenon—it’s a sort of ghostly burst of blue fluorescents that actually travels through the worm and it tracks death. These worms are transparent, so it means you can actually watch death as it passes through the animal, which is kind of eerie. But it’s also kind of useful because it means you can watch death. As a scientist, you can actually do experiments on it. You can try and stop it and slow it down and figure out how it’s happening.

Aging in worms relates to humans in two different kinds of ways. We have to understand fundamentally what sort of thing aging is and what kind of process it is. That’s important because what’s going on now is kind of like a battleground of ideas in connection to the worm with what aging is. This is part of the process of overturning this old theory of damage causing aging and we’re working on a new theory that can replace it.
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The thing is that studying aging in humans is very difficult—there are a lot of experiments. So the idea is that we could solve aging in very simple animals like fruit flies and worms, not because I give a damn about worms it's just because it's really easy to study. The big news in these animals is you can slow the aging down by a lot. Aging is something you can intervene in. You can't reverse it, and you can't stop it, but you can slow it down. In the worms you can double, triple or quadruple their lifespan.How do you think expanding the human lifespan by 2, 3, or ten times change society?
Let me try and do some crystal ball gazing based on what’s currently possible. I think that it's very likely if they applied these practices to humans in nature, it would be possible to slow aging down modestly. So that might mean increases of the lifespan by a decade or two—and that's fairly optimistic—but remember if you were to cure all cancer you would only increase human lifespan by a few years, so this would involve an enormous improvement in late life health.I don't think that at the moment there is concern about consequences of massive life extension, from what I know of aging I don't think it's very likely at all that there will ever be any silver bullet like antibiotics, where you take a pill and massively slow aging down. I think it's likely that this will be very incremental. So people shouldn't worry about human evolution, but more about resources and all that stuff for the older population. We've got to figure that out or we're finished. You can't start saying, "Oh a convenient way to deal with this problem like managing our resources and population is to ALLOW people to get Alzheimer's and cancer" because that's a simple Nazi kind of approach. Old people’s suffering is just as painful as suffering in young people and we have to do whatever possible to improve health in everybody.More immortality and health:
The Immortality Commune of Gavdos[John Martin Fischer Is Going to Solve the Afterlife](http:// http://www.vice.com/enca/read/john-martin-fischer-is-going-to-solve-the-afterlife)_