Gene Therapy Extends Mouse Lifespan 182
Grond writes "ScienceDaily reports, 'Researchers at the Spanish National Cancer Research Centre have demonstrated that the mouse lifespan can be extended by the application in adult life of a single treatment acting directly on the animal's genes. Mice treated at the age of one lived longer by 24% on average (PDF), and those treated at the age of two, by 13%. The therapy, furthermore, produced an appreciable improvement in the animals' health, delaying the onset of age-related diseases — like osteoporosis and insulin resistance — and achieving improved readings on aging indicators like neuromuscular coordination.' Notably, the therapy did not cause an increase in the incidence of cancer."
And soon we shall have the immortal (Score:4, Funny)
But they will be divided by a contest for power, for whoever takes the head of another shall gain his might.
I just hope they don't electrocute us all.
what about side effects? (Score:2)
what about side effects?
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You seem to get cursed with a very bad accent.
your chronological age will still increase (Score:3)
no cancer is a pretty good side effect, tho
how about just making some stem cells from a tissue sample, and then treating them with the telomerase virus, and then injecting them back into you?
Waste of Taxpayer $$$ (Score:5, Funny)
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Fruit flies.
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Lmfao.... reminds me of the sheer ignorance that McCain snd Palin demonstrated regarding fruit flies. good poke.
Fruit flies ... (Score:2)
Fruit flies.
Time flies like arrow
Fruit flies like ?
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no cancer is a pretty good side effect, tho
It's not widely known that everyone has cancer. Shocking at first, but its not really that big of a deal. When we're young, we slough off cancer cells easily (I think they are digested... but I'm not an oncologist or anything) and they are replaced by healthy cells. As we get older, the ability to slough off cancer cells decreases, and when too many cells are cancerous, that's generally considered "having cancer." I think if people realized this fact of biology, there wouldn't be as much fear involved when
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but when cancer is diagnosed, it means we have too many cancer cells to slough off - and that can often be fatal
some of how you feel may be related to frame of mind, but the basic stuff is really based on physiological health - like whether you have cancer or not
Re:your chronological age will still increase (Score:4, Informative)
What you mean to say is that everyones suffer constant genetic damage that in the absence of cell cycle checkpoints and DNA repair mechanism and improper regulation of apoptosis(cellular selfdestruction) and whatnot else would most likely lead to cancer in a short time.
Some people actually have cancers that are contained and are free from symtoms, but this should be detected and treated as the very hallmark of cancer is their tissue-invasive and metetastatic properties, so given time, they will try their best to kill you if left alone.
But no, everyone do not have cancer.
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I believe the grandparent is most likely misinterpreting the observation that most men die with prostate cancer. In the vast majority of cases, something else kills them before the cancer. One of the interesting effects of increased screening in the USA is that, early on, a lot of people underwent treatments that turned out to be more dangerous than the cancer. Now, doctors are a lot more willing to recommend just ignoring it.
His comment most likely is true of rats. Pretty much all rats that don't star
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It's not no cancer.
Some other methods increased youthfulness but increased the cancer rate as well.
This one doesn't increase the cancer rate- but you can still get cancer.
The rats .... (Score:2)
The rats that can afford the cheese will come out of the woodwork, congress will pass a law to make it all illegal in the USA, and life with death will go on for US and EU.
Re:And soon we shall have the immortal (Score:5, Funny)
But they will be divided by a contest for power, for whoever takes the head of another shall gain his might.
But where will they find swords small enough to fit into their tiny little mouse paws?
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The cocktail section of the local liquor store.
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I truly believe this [deviantart.net] is obligatory.
THIS IS NOT NEWS (Score:3, Informative)
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No, the Harvard researchers didn't do the same thing. They genetically engineered mice to have short telomeres, inducing faster aging, and then reversed the process by reactivating telomerase. The mice didn't actually live longer than normal. By contrast, the researchers in this study used a single application of gene therapy to extend the lifespan of normal mice, and they did so using techniques that have already been used in humans to treat other conditions.
Re:THIS IS NOT NEWS (Score:5, Informative)
The Harvard researchers didn't use gene therapy to lengthen the telomeres. They engineered a knock-in allele encoding a 4-hydroxytamoxifen (4-OHT)-inducible telomerase reverse transcriptase-Estrogen Receptor (TERT-ER) under transcriptional control of the endogenous TERT promoter. Basically, the mice had short telomeres and the researchers could reactivate telomerase by administering 4-OHT. That's genetic engineering, not gene therapy in adult mice.
Furthermore, the Harvard researchers showed the reversal of artificially-induced aging, but not an increase in lifespan. The researchers in this study demonstrated an increase in lifespan in normal mice.
The Harvard study showed that improving telomerase activity could reverse or slow aging, but it didn't show how to actually accomplish this in normal, adult organisms. That's what the researchers in this study have done, at least in mice.
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But the basic concept is still not new. A few years ago some other scientists demonstrated that you can even lengthen telomeres via oral administration of a plant extract. I didn't believe that until I read the research paper, which was peer-reviewed.
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My dad hypothesized this in the early 80s. Theory and proof are far diffetent... the same goes for transgenic inducible expression vs gene therapy.... the prior is a proof of concept, the latter is the pudding.
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"My dad hypothesized this in the early 80s. Theory and proof are far diffetent..."
I did not say "hypothesis" or "speculation". Look elsewhere in this thread for a link I supplied. This research has been going on for years and is far from mere speculation.
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The discovery of telomeres and telomerases preceded this by a couple decades... and the transgenic inducible preceded the gene therapy...my point is that its still novel and interesting despite your opinion that it isnt.
Re:THIS IS NOT NEWS (Score:4, Interesting)
The exact formula they make from astragalus (and possibly other sources?) they claim is made from several ingredients that they claim to have a synergistic effect. However, it is also astronomically expensive. But the main "active ingredient" is available on the open market at much more reasonable rates.
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They also reported all the other effects that these researchers claim: a drastic decrease in age-related disorders, and renewed strength and coordination (as demonstrated by tight
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"But you would agree that progress is progress, yes? Why are you so excited to discredit this? Do you have a horse in this race?"
You misunderstand me. I have no interest in discrediting this at all. On the contrary, it appears to reinforce past research into the same thing, and reach the same conclusions.
And to me, that is all Good News. It just isn't so much "news".
Rats! (Score:2)
This reminds me of the "calorie restriction" guy, who found out rats live 50% longer if they are fed less food then they actually need.
So...they lived 3 years instead of 2.
So...would a human gain 35 years...or 2?
Same thing here.
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Re:Rats! (Score:5, Informative)
Avg. life expectancy USA male: 75.6 (source: http://en.wikipedia.org/wiki/List_of_countries_by_life_expectancy [wikipedia.org])
Roy Walford died at age 79 of respiratory failure as a complication of amyotrophic lateral sclerosis (commonly known as Lou Gehrig’s Disease). (source: http://en.wikipedia.org/wiki/Roy_Walford [wikipedia.org])
Love your rage dripping between the lines, though
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Americans especially need to accept the fact that the less you eat the longer you live... except that you must eat the right things, the right nutrients that does a body good.
And you've still got to be lucky as well as good. There are many things that can kill you even if you don't overeat (e.g., hungry alligators!) and there are plenty of diseases that don't normally kill but do make your life truly miserable. (Osteoarthritis is a classic example, both common and awkward to treat.)
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Except that the average life expectancy you quote is at birth... Roy was in his 40's when he started reducing his amount of calories, so his life expectancy would have been approaching 80 regardless of what he ate.
Pass me the steak!
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Lying troll.
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This reminds me of the "calorie restriction" guy, who found out rats live 50% longer if they are fed less food then they actually need.
So...they lived 3 years instead of 2.
So...would a human gain 35 years...or 2?
Same thing here.
Or would the human quit the study because he was always hungry?
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However, the point that is often missed here is that the calorific restriction involved is intolerable - it would leave you weak, lethargic, and with no quality of life. I can't remember the exact details, but it's of the order of 1000 calories a day for a man, less than half the standard recommended amount for weight maintainance.
Don't fear the reaper (Score:3)
Re:Don't fear the reaper (Score:5, Insightful)
Sure, people lose some mental faculty as they age, but in my estimation it's far more likely because of physical degradation of the brain than a hand-waving concept like "degradation of psyche". Stop the physical degradation of the brain, and the mind will remain fresh.
Re:Don't fear the reaper (Score:5, Insightful)
I'd make an off-the-cuff guess that most people could extend their effective lifespans by 24% if they just got +20 minutes of moderate (heart rate up, light sweat) exercise each day. Cost? $0 and 20 minutes of time. Available to everyone, ready for mass implementation today. Compared to gene therapy, anyone could do the exercise today for nothing. And most won't even then.
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I'd make an off-the-cuff guess that most people could extend their effective lifespans by 24% if they just got +20 minutes of moderate (heart rate up, light sweat) exercise each day. Cost? $0 and 20 minutes of time. Available to everyone, ready for mass implementation today. Compared to gene therapy, anyone could do the exercise today for nothing. And most won't even then.
So this would increase life expectancy from 78 to 96? I'm not buying it.
Re:Don't fear the reaper (Score:4, Insightful)
(20 Minutes * 365 days * 63 employable years) = 459900 minutes / 60 minutes per hour = 7665 hours of exercise.
7665 hours * $8 (minimum wage) = $61320. If the treatment costs less than $61000, it is cheaper to have the treatment than it is to exercise.
If you make even $25/hour, a $150000 procedure is cost effective.
Getting off your ass has perks. (Score:2)
It's worth noting that exercise may have other benefits which gene therapy may not provide.
Improved endurance.
Improved mood.
Improved sleep patterns.
Improved physical appearance.
These have value too.
And some people even find they ENJOY exercise, once they get in shape.
Re:Don't fear the reaper (Score:4, Interesting)
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"The older you get, the crazier you become in most peoples eyes."
Tell that to people like Albert Einstein, Richard Feynman, Stephen Hawking, etc., etc. ...
Sure, some people go crazy or get cantankerous. Others gain wisdom and give damned good advice. I don't think generalizing is going to go very far here.
Re:Don't fear the reaper (Score:4, Funny)
Unfortunately, at least in the US, it would be more like think of Thurmond, Byrd, and Stevens. We'd have to start actively killing off politicians.
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"Unfortunately, at least in the US, it would be more like think of Thurmond, Byrd, and Stevens. We'd have to start actively killing off politicians."
Hahahaha. Somebody please mod this up. I am laughing way too hard. Tears of truth.
Re:Don't fear the reaper (Score:4, Insightful)
We keep trying to live longer, but I can't see a life past 90 being very comfortable or enjoyable. The older you get, the crazier you become in most peoples eyes.
I look back on neighbors and family who lived well into their nineties --- at home, mentally alert and physically active until very near the end. It has me thinking that it is the contempt the young have for the old that is vain and mad.
Re:Don't fear the reaper (Score:4, Insightful)
My theory on this is marketing. I mean think about it, the traditional attitude of the young towards the old in most cultures is of respect for their knowledge and experience, but the "MTV generation" run right up to their 30s with a sneer on their face for anyone older. I reckon its the product of an intense and massive focus on youth culture deliberately fostered by marketing executives who know full well that what they are selling is crap, and the only way they can sell it is if the young are seperated from the older, stronger, wiser population who would rightly advise them to keep their money in their pockets.
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Why not? My grandma is 90+ and still happily alive. She lives alone and spends lots of time online Facebook-ing and Skype-ing the many people she's got to know during her long life and meets up with some of them every now and then. The only help she receives is a maid doing some of the heavier cleaning tasks two times a week.
My only fear at that age would be outliving all my close friends and family, but if my grandma is anything like I can expect for myself I'm certainly not worried about physical or menta
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Better, healthier genes = longer life (Score:2)
Sorry, it had to be said. (Score:4, Interesting)
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whatcouldpossiblygowrong (Score:2)
Whatever happened to the whatcouldpossiblygowrong tag? This story sounds like the beginning of a Michael Crichton novel and we all know how those end. Joe Haldeman's Old Twentieth also had something like this called the Becker-Cendrek process. Made you immortal. Somehow I don't think it would be too difficult to get human volunteers for this one.
I'll bet Aubrey de gray is dancing wherever he is (Score:2)
Interesting science isn't always such a good idea (Score:2)
Maybe if we had the resources to sustain an enourmous population... but we already have an enourmous global population... and there's a serious energy crisis, as well as ... polution, global temperatures... etc.
Maybe scientists should be figuring a way to make people live shorter, but far better quality lives. I kid... of course. But quality of life is important, and as the population increases, so does competition for limited resources, and individual quality of life will decrease. If we suddenly have a
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Granted, things will probably get worse before they get better, but I just don't see the population apocalypse that others in the past have predicted, actually happening.
According to census figures, if it were not for immigration, the population of the U.S. would actually be lower today than 10 years ago.
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I guess we'll have to increase all the milestone ages... age of concent, drinking age, voting age, and retirement age... maybe make celebacy trendy somehow... really start giving gays and lesbians huge incentives... and start heavily taxing marriage and procreation.
Marriage and procreation are taxing enough as it is.
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I guess we'll have to increase all the milestone ages... age of concent, drinking age, voting age, and retirement age... maybe make celebacy trendy somehow... really start giving gays and lesbians huge incentives... and start heavily taxing marriage and procreation.
Marriage and procreation are taxing enough as it is.
Well said, but I don't believe a word of it. One can only go so far alone.
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But quality of life is important
Significantly delaying the onset of age-related diseases is one of the biggest contributors to quality of life I can imagine. And if we have to work an extra twenty years for an additional twenty years of youth and health ... well, that's a tradeoff I'd certainly be willing to make, and I expect a whole bunch of other people would feel the same.
There wouldn't be any need to delay the age of adulthood as you suggest. We'd just have longer, healthier, more productive, and all-around better adult lives. Sig
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1 yr. in mice = 20 in people so cancer may come. (Score:2)
(Sorry about the abbreviations). A friend of mine pointed out that extending the life of a mouse by say 25 percent cancer free may not do the same when extending the life of a human by 25 percent.
The reason of course is because if it takes say 3 years for a cancer to develop because of this therapy (given to the mice when they were adults), the mice would still have died of other causes before the cancer could kill them (a 25 percent increase in a mouse's lifespan is only about a year). Whereas with people
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Unless 1 year in mice = 1 year in people.
The Problem with lifespan extension (Score:2)
In any event, we better be used to starvation diets if such things come to pass. If the Duggars and the Octomom and Kate Gosselian prove, it is impossible to keep people from irresponsibly overpopulating the world.
But let's say that we extend human lifespan to say 200 years. Is this increased lifespan going to be one in which everyone is healthy in a youthful manner until
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Duggars and the Octomom and Kate Gosselian prove
Their children average out to a negative number when the nation as a whole is counted. If you are going to extrapolate from single individuals, any people that don't have kids are even worse, as their breeding practices would end the human race with their generation.
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It's easy to get discouraged when watching a loved one live through that. Personally I think our paliative care options are too limited.
But it's important to remember that many people live long and active lives with very little problems. My grandfather died at 72 as each of his organs started to fail one after the other. It took him a very long time to die in a horrible, painful way. But my father, who is turning 70 this year, still rides his bike 60-70 km at a go, up and down mountains. He plays 18 ho
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Sure, sure, all of that is scary. But think of the ultra-porn!
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In any event, we better be used to starvation diets if such things come to pass. If the Duggars and the Octomom and Kate Gosselian prove, it is impossible to keep people from irresponsibly overpopulating the world.
Even with those people, The USA, Canada, and just about all of Europe have had birth rates well below replacement for a few decades now (The USA hasn't had a birth rate above replacement since the late 60s). Immigration is the only way population is growing around here.
Let the mouse die! (Score:2)
Bring on the advanced haptic interface now!
Hey Kids - Get out and VOTE now! (Score:2)
Great! (Score:2)
A more interesting story would be (Score:2)
"Gene Therapy Extends Mouse Wingspan"
Next steps (Score:2)
1 Put incold virus.
2 Release in wild
3 Watch the fun begin
Imagine the fights for resources when everybody lives 10-20 years longer absent injury or infectious disease.
Eating buckeyballs doubles rat life expectancy (Score:3)
From http://www.33rdsquare.com/2012/04/eating-buckyballs-double-rat-life.html [33rdsquare.com]
Scientists at the University of Paris and colleagues fed the molecule fullerene (C60 or “buckyballs”) dissolved in olive oil to rats and found it almost doubles their lifespan, with no chronic toxicity.
The results suggest that the effect of C60, an antioxidant, on lifespan is mainly due to the attenuation of age-associated increases in oxidative stress, according to the researchers. Moreover, the researchers speculate that a longer treatment could have generated even longer lifespans.
...
“C60 can be administered orally, and as it is now produced in tons, it is no longer necessary to resort to its water-soluble derivatives, which are difficult to purify and, in contrast to pristine C60, may be toxic.
Why no cancer-free humans? (Score:2)
From the article: "In 2007, Blasco's group demonstrated that it was feasible to prolong the lives of transgenic mice, whose genome had been permanently altered at the embryonic stage, by causing their cells to express telomerase and, also, extra copies of cancer-resistant genes. These animals live 40% longer than is normal and do not develop cancer."
Why can't we have cancer free humans based on this research?
Too Late (Score:4, Funny)
Just make sure to get it before you reach the age of 1 or 2
Re:And why exactly.. (Score:5, Funny)
Re:And why exactly.. (Score:5, Insightful)
you're right, there's no point in it unless we can fuck hot young women until the end.
If they don't age, why would we care if they're young?
The looks and energy of an 18 year old combined with the fertility and experience of a 918 year old sounds like the perfect combination to me!
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"you're right, there's no point in it unless we can fuck hot young women until the end."
I'll be here. For a l--o--n--g time.
Re:And why exactly.. (Score:5, Insightful)
Do you want to die today?
You won't tomorrow, either.
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The paradigm of how life is lived will change drastically once we find a way to extend life by a significant percentage in one fell swoop. Depending on how things shake out, the question of whether you want to die today, tomorrow, or any day may well become irrelevant.
Re:Increase in cancer (Score:5, Interesting)
They report no statistical increase in cancer, but an absence of signal is not a signal of absence, and the methods alone should clue you in.
I guess my tolerance for cute sayings as explanations has declined as my crotchetiness has increased. The phrase you are looking for is "small sample size". Glancing at the rear of the article:
Separate groups of mice were tail-vein injected with 2*10^12 (viral genomes)/animal of either AAV9-GFP, AAV9-mTERT or AAV9-mTERTDN, a catalytically inactive form of mTERT (Sachsinger et al, 2001), at 420 days (AAV9-GFP, n=14 [50% males and 50% females]; AAV9- mTERT, n=21 [52% males and 48% females]; AAV9-mTERT-DN, n=17 [53% males and 47% females]) or either AAV9-GFP and AAV9- mTERT 720 days (AAV9-GFP, n=14 [58% males and 42% females]; AAV9-mTERT, n=23 [52% males and 48% females] of age. All mice are of a >95% C57BL6 background. Longevity comparisons were always made within the same mouse cohort to avoid minimal possible differences in genetic background between the groups.
They had five samples from 14 to 23 in size. That's a bit slim for some of the claims they make such as the bit about cancer.
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The value of being first to publish is wat youre talking about. Clearly the lab will reproduce the scenario dozens of times on hundreds of mice as they pursue further refining/expansion of this very interesting technique.
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"The value of being first to publish is wat youre talking about."
Except that they aren't. See the Scientific American article I linked to way up above. Others have been studying lengthened telomeres (achieved by other means) for many years now, and none of them have reported any increase in cancer rates. Quite the opposite, in fact.
Some of the research suggests that short telomeres might actually be a factor in causing cancer, or helping it to grow.
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People who do biomedical research on mice have to have their research approved by an Institutional Animal Care and Use Committee (IACUC). As part of the approval, the researcher has to justify the numbers of animals used. To do that, the researcher performs a power analysis, matching the number of animals to the experimental design.
If you actually look into power analysis you might be surprised at how few animals you need. It's certainly not the case that you can just look at the sample size and declare
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Re:Increase in cancer (Score:5, Insightful)
They report no statistical increase in cancer, but an absence of signal is not a signal of absence
What...the...fuck?
You took something you heard people legitimately saying about certain inferences and used in a way that is not legitimate.
Here's an example that is legitimate. A cold will sometimes, but not always, be accompanied by a cough. Therefore a researcher could be trying to examine the incidence of colds by examining the incidence of coughs. Because it's entirely possible to have colds without coughs, you may then legitimately claim that the absence of the signal, the cough, is not a signal of the absence of colds. It's sufficiently correlated that it is a useful metric, but it is not a sufficient metric to draw strong conclusions. The absence of coughs are, however, most certainly indicative of the absence of coughs
No statistical increase in cancer most certainly means no statistical increase in cancer (I'm a member of the tautology club!). It is possible that the the lack in statistical significance was an anomaly (and just how probable an anomaly that would be is quantifiable, and I'm sure is quantified in the paper in the form of a p-value), but it is certainly indicative of no increases in cancer. That is exactly what they were measuring.
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But NOOOOO, it's not anything useful like that - just some crap about making people live forever.
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