Boys maturing sexually earlier than ever

A new study has revealed that boys are maturing physically earlier than ever before with the age of sexual maturity decreasing by about 2.5 months each decade at least since the middle of the 18th century

Boys maturing sexually earlier than ever

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Joshua Goldstein, director of the Max Planck Institute for Demographic Research in Rostock (MPIDR), has used mortality data to prove this trend, which until now was difficult to decipher.

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What had already been established for girls now seems to also be true for boys: the time period during which young people are sexually mature but socially not yet considered adults is expanding.
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"The reason for earlier maturity for boys, as with girls, is probably because nutrition and disease environments are getting more favourable for it," said demographer Goldstein.
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It has long been documented by medical records that girls are experiencing their first menstruation earlier and earlier.
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But comparable data analysis for boys did not exist. Goldstein resolved this gap by studying demographic data related to mortality.
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When male hormone production during puberty reaches a maximum level the probability of dying jumps up. This phenomenon, called the "accident hump", exists in almost all societies and is statistically well documented.
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Goldstein discovered that the maximum mortality value of the accident hump shifted to earlier age by 2.5 months for each decade since the mid-1700s, or just over two years per century.
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Accordingly, the age of boys' sexual maturity decreased at the same rate.
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Essentially, the data showed that the age of sexual maturity is getting younger and younger since the accident hump is occurring earlier and earlier.
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In respect to the developmental stage of the body "being 18 today is like being 22 in 1800," stated Goldstein.

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