It turns out that "rejuvenation effect" does not exist in young blood, however, another possibility to retard aging is newly found

ByPhillip Jeffrey

Human beings are burning considerable obsession with retarding aging and keeping youth and even "regaining youth". In past researchNatural healing power rises if young blood is taken inAlthough it was confirmed, in fact, there was an error in the explanation, and it was confirmed that the blood itself does not have a rejuvenating effect.

No, teenage blood will not make you young and beautiful | Popular Science
http://www.popsci.com/nothing-special-about-young-peoples-blood-aging-parabiosis

A number of recent studies have shown that the idea that young blood is a "panacea" that prevents aging is spreading, but the results of research awaiting this are presented by the research team at the University of California at Berkeley. From this study it is also revealed that not only anti-aging effect is not observed in the blood itself of young individuals, but also that the blood of an elderly individual contains substances that advance the aging of living things.

Two studies were conducted in this study, and the influence of blood on individuals has been confirmed. One was "to put the blood of a young mouse into an aged mouse" and it was confirmed literally that "rejuvenation is possible", but it turned out that the result was "no effect". Experiments on "Reversing the old blood of mice into young mice" resulted in problems with the organs and other organs of young mice. From here it is highlighting that it is some substance contained in old blood that causes aging and not "losing antioxidant" from young blood. Professor Irina Comboi, who was involved in the study said, "From this result we can see that young blood itself does not have medicinal effects."

ByHy'Sqqa

In 2005, Professor Convoy et al.'s team gave blood to health by connecting the blood vessels with a method called "parallel combination" of two different age-different mice and creating an environment where both bloods can freely go back and forth I investigated the actual situation. As a result, since obvious restoration was seen in organs of old age individuals, it was considered that exchanging blood has a good effect on blood circulation.

And Profong Convoy says that this result will walk alone. The media report that the so-called "rejuvenating effect" is in young blood heated more than it actually was, and there was a situation that the actual appearance can not be understood well. According to Prof. Convoy, it was overlooked that old individuals enjoyed not only the blood of young mice, but also the positive effects of young mice lungs, liver, and other organs.

ByRene Schwietzke

Therefore, Prof. Convoy newly decided to adopt a method to measure the effect of pure blood itself by creating a situation where the influence of both individuals does not reach. Using that technique, we will keep mice that have both blood swapped in half by 1 month, then change the changes seen in both bodies, such as the growth of stem cells and brain cells and the muscle cell repair condition We surveyed.

Then, there was no particularly noticeable change in mice of aged individuals, but deterioration of health condition was seen in young mice. The function of each organ decreased, especially the bad influence on brain cells was noticeable. This means that not only did we find that young blood had no rejuvenation effect, but on the contrary it turned out that older blood had a function to lower the health condition of young mice. Prof. Convoy believes that some aging promoting substances that inhibit the growth of somatic cells are contained in the blood of aged individuals. Prof. Convoy also points out that these growth inhibiting substances have the power to dominate substances contained in young blood.

ByBlue Celt

The latest research has revealed not only that "young blood is a rejuvenating drug" is denied, but "old blood contains some substance that promotes aging". Professor Convoy believes that drugs will control aging promoting substances in the future. It is possible to delay the aging by weakening the function of substances causing so-called adult diseases, etc. However, Prof. Comboi talks about the prospect that there is still a long way to clarify the problem.

Papers by Prof. Convoy's research team can be viewed on Nature Communications site.

A single heterochronic blood exchange reveals rapid inhibition of multiple tissues by old blood: Nature Communications
http://www.nature.com/articles/ncomms13363