We are teenagers from 10 to 24 years. This is the new standard

Health 23 January, 2018


Published the 23.01.2018 at 11h54


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If one believes a study published in The Lancet, Child & Adolescent Health, adolescence would last 10 years up to 24 years of age. This is not good news for many parents, sometimes-weary teenagers who are struggling to take their independence. The Tanguy will once again flourish…
For the lowering of the age of early adolescence, it is the improvement of the standard of life and of nutrition which are in question, by acting on the physiology and causing a puberty more early everywhere in the developed world. This is confirmed by INSERM, which states, “a reduction is particularly important in the age of the first rules to be observed in most western countries. The interindividual variability can reach 4-5 years of age and is dependent on genetic and environmental factors and possibly interactions between these two types of factors”. This explains perfectly the new standard of entry in the teens of 10 years.

The change of age of exit is even more dramatic. You are now an adult at 24, 25, or even 29 years. In question, the sociology : the study will prolong and delay the passage to adult life, and in the same time, the wedding and the arrival of the first child.
It is also the wealth of the society that allows teens who want to take their time and to mature, to take a “gap year” to explore a world tour, a cool trip in Australia or a humanitarian… Before going into the “tunnel” of the professional life. Moreover, for the experts, it is certain that the brain continues its development after the age of 20 years.

Age brain varies little

But let us start at the beginning of the story, with one of the best specialists of evolution, professor Bernard Sablonnière, professor of biology in Lille. According to him, the “real life “conscious” starts with what he calls the “Big bang” neurological : on the 28th day of the embryo ! Recent methods of imaging have highlighted, as of the end of the 4th week of conception, the creation of millions of neurons (3 000 neurons per second) and the beginning of their interconnection.
This explosion is a little anarchic in the belly of the mother, but on the 6th month, it reaches billions of connections ! Approximately $ 60 billion, to the provision of the network organization that will continue for 20 years. It can be considered that, during all these years, the capital neural is sorted out, investigated and then eliminated, in order to keep the circuit useful.
The birth sign a second age of evolution, of which it is estimated that it will take up to 10 to 12 years. This is the period during which our brain is extremely malleable, which allows all the learnings of life.
The next period is that of adolescence, of which the estimates vary the most. Nowadays it is said that from 12 to 29 years the growth continues. 29 years old, the age at which the brain is supposed to be at its peak. This would be the theoretical limit of adolescence, which promises us in the future still a new standard. But after you stop, because there is one certainty : from 30 to 65 years of age, the abilities are slowly decreasing, with a slope quite fresh, and which may be hindered, because the adaptive capacities of the brain are almost endless, although still poorly known, and especially under the addiction of what you are eating. Not to mention the toxic substances that are imposed on him or difficult living conditions, including poor sleep.
However, from the age of 65, even if it is not yet linear, old age has done its work and the connections are less effective.

Age-psychological and sociological

The age psychic, by contrast, is very sensitive to the environment and living conditions that are imposed on our neurons. Until the 19th century, life expectancy was poor, the confrontation to the adult world faster and it would be difficult to say that Bonaparte at the Bridge of Arcole was a teenager… Or as the mathematician regarded as one of the brightest that humanity has ever known, Évariste Gallois, who had died less than 20 years old in a duel for teens !
Yet this is the scientific journal The Lancet would like to explain to us in calculating that today, adolescence lasts until age 24, and even 29 ! It is rather curious, because if this is true, 2 ages previously defined would be… confused.
No medical data is encrypted, but just an appreciation of the age of the final departure of the family unit, the marriage, or, most eloquent, one of the first maternity today is well after 30 years.
Traditionally, adolescence was a short one, from 13 to 19 years. The specialists prefer to speak now of a period that they call for really teens but who looks and who would start around 10, 11 years – influence of the internet on the acquisition of knowledge – and it would take at least up to 24 years of age, because the outside world is no longer as reassuring as it once was.
This would have no consequences for the followers of the marketing, if the adaptation of the age psychic to the physical age was not a real problem. An example, at age 11, the new teenager has not really started puberty and the age of the first menstruation, if it is a little advanced, was not in the same proportions as the age psychic.
In contrast, for the age of the end, it is a factor to be taken into account for the company.

The SNCF has well understood that, by raising the ceiling of the map young of 27 to 29 years old !