The only thing certain in life is that everyone, sooner or later die.

Humans commit some time to try to achieve immortality, at least try to live beyond 100 years.
Many people think that we are getting closer and closer to that time, and new research undoubtedly contributes to fuel this hypothesis: these scientists, in fact, say they were able to reverse aging in human cells.
"We can make the younger aged cells," explained Dr. John Cooke, of the Department of Cardiovascular Sciences of the Houston Methodist Research Institute, lead author of the paper published Monday in the Journal of the American College of Cardiology.
The Cooke team has worked on the telomeres of cells of a patient - the terminal regions at the end of chromosomes whose length corresponds more or less at the age of the subject.
Telomeres are the favorite target of anti-aging scientific community.
But there are still good reasons not to believe that we are suddenly able to find the fountain of youth.
In the new study, the team took Cooke of cells from children suffering from progeria, a rare genetic disorder that makes age the patient very quickly.
"These children lose their hair, they suffer from osteoporosis.
They seem spoiled and old, "he told me on the phone.
These children usually live up to the early years of their adolescence, and then fail due to a heart attack or a stroke.
This type of patients in desperate need of new techniques in order to prolong the life of cells.
The paper shows that 12 of the 17 participants in this study (who were from 1 to 14 years) had shorter telomeres, similar to those found in the cells of a healthy 69 year-old.
Cooke explained that their cells may help us better understand the process of aging in healthy humans.
The Cooke's team used a technology called 'RNA therapeutics', which sends the RNA directly into cells to encourage them to produce telomerase, a protein that lengthens telomeres.
The technique has improved the longevity of the cells and their operation.
Before operating this technique, the cells "is multiplied with fatigue and died easily," said Cooke.
After the procedure, "the cells began to proliferate normally, it was a radical improvement."
The symptoms of aging, such as the release of proteins that contribute to inflammation, began to shrink.
Video: Houston Methodist / Vimeo
Obviously, the cells in vitro are different from a living human being whole.
Cooke believes that, although there is still a lot of research to do, this results are a promising sign, and that could have many applications in the fight against disease related to aging.
"When lengthen telomeres, we can reverse many of the processes associated with aging," he explained in a video accompanying the research.
This study follows the path traversed by other research that highlight the link between telomeres and aging and anti-aging potential of telomerase.
In 2010, a high-profile paper published in Nature described as the guinea pigs which was made lacking telomerase ended up age faster and rejuvenating once the protein was administered.
Telomerase is collecting enormous interest on the part of anti-aging communities, and different supplements circulating online claiming to be of "activators of telomerase."
According to Dr. Peter Lansdorp, professor of genetic medicine at the University of British Columbia and the BC Cancer Agency scientist, you have to go easy when talking about the miraculous properties of telomerase.
He explained that despite the enthusiasm, there is still a lot to learn.
Telomeres tend to shorten as we age, but second Lansdorp the correlation between these two factors is not entirely straightforward.
"It is not hard to find his 70 with telomeres longer than those of a teenager," he said in an email.
And there are good reasons to believe that the telomeres tend to shorten with age: it is a "defense mechanism against cancer," as explained by Lansdorp.
Our cells stop dividing and die when the telomeres get too short.
If it does not, we would be exposed to a much higher risk of developing cancer.
Cooke thinks that soon see the development of treatments that aim to influence "the mechanisms of aging."
The treatments that activate telomerase may have the potential, explains Lansdorp, but only under certain conditions.
"For example, if it were possible to lengthen the telomeres in the cells that produce blood, these cells could be used as a starting point for new therapies of the selected patients," he explained.
However, replacing a heart or a defective kidney developed entirely from a patient's cell is still "science fiction," according Lansdorp.
Cooke, on his side, hoping to translate what he saw happen in the laboratory cells on patients - first of all, children with progeria.
One challenge, he said, concerns the figure out how to send the treatment directly into patients' cells, and an option may be nanoparticles.
Cooke thinks that our generation will assist in the development of treatments that aim to influence the "mechanisms of aging," and by extension all those disease with old age affect us.
As for immortality, however, Lansdorp is rather skeptical.
Immortality "is not an objective pursued by serious scientists," he explained.
Our bodies are mortal by definition, so maybe we should just make up our minds to upload our minds into robotic bodies.

From Vice