The boy is more and more early-maturing

The boy is more and more early-maturing
The boy is more and more early-maturing
According to the report of Berlin (Xinhua) the 18th August ' Reporter Ban Wei) The parents often has such a feeling: The child of today is physiological more and more early-maturing. Scientific circles verify to research that human medical science record girl the intersection of moon and by first menses age advance more and more already, but boy maturational age is studied lacked the constant data in the past. A new research of the research institute of population of German Max Plonk has remedied this blank indirectly. Research verifies, at least since middle period of the 18th century, boy ripe age is average 2.5 months ahead of time every 10 years. The chief of this institute Goerder construct safely and says: "18 -year-old boy's physiological development ripeness is equivalent to 22 years old in 1800 nowadays. " This conclusion is got through the fact that method to study every age group mortality curve of 5 national men in Europe. Because says that Goerder constructs safely, it is that mankind have male various nationalities nearly age category mortality curve will until every one will be appeared to adolescence one period of specific period " The peak period of unexpected death " ," peak period of unexpected death " Will reach ultimate attainment after the boy change sound and have fecundity in later period of adolescence. In that this stage boy's hormone is secreted and peaked, the boy often acts recklessly crudely and rashly at this moment, thus lead to the fact the probability of dying unexpectedly increases. Utilize this kind to be like statistic by characteristic phenomenon of first menses of girl's moon, researcher extrapolate the intersection of boy and conclusion that physiological mature period advance indirectly. Goerder constructs safely because thinks, man ripe increasingly early main reasons of women are the constant improvement of the human nutritional status. Result that above-mentioned phenomenon lead to the fact, the intersection of young people and the intersection of physiology and ripe the intersection of time and more and more early social the intersection of age and as to lag behind ripe time. The research institutes of Max and Plonk people point out, demography research shows, came in over half a century in the past, it is larger and larger that people no longer rely on parents' age economically, young people's already sexal maturity but the life that has not still born has been longer and longer. This research institute does not have detailed analysis social influence of this trend.


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