m*******8
发帖数: 111 | 1 这个问题好像是世界范围的，在所有富裕的，和正在富裕起来的地区．
－－－
Premature Maturity
Article URL: http://www.slate.com/id/2264500/
Are children today really going through puberty earlier?
By Darshak Sanghavi
Posted Thursday, Aug. 19, 2010, at 1:21 PM ET
In 1977, hundreds of young Italian boys and girls attending a school near
Milan suddenly began growing breasts. A subsequent investigation published
in the Lancet suggested that contaminated beef and poultry were the likely
cause. A decade earlier, another outbreak of early p | m*******8
发帖数: 111 | 2 摘要：
１。儿童性早熟从７０年代起引起西方医学界关注；
２。儿童性成熟的准确判据不是外性征的发育，而是hypothalamus和particularly开始
分泌性激
素；
３。儿童性早熟的研究大多集中于女童的原因是，女童的外性征发育比较容易判断和检
测，不是因为
女童的性早熟更加普遍；
４。尽管女童外性征发育有提早趋势，但是研究表明，过去４０年间，女童初潮并未提
前，仍然是１
２岁之后；
５。研究表明，女童外性征发育越早，发育成熟所经历的时间越长（所以，大家都差不
多同时成
熟）。
６。以上现象，在医学里叫做“lead-time bias”；
７。所谓“女童性早熟”现象的答案，更多的不是在医学领域，而是在社会学领域，比
如媒体对性感女
孩的追捧，等等。
【在 m*******8 的大作中提到】
: 这个问题好像是世界范围的，在所有富裕的，和正在富裕起来的地区．
: －－－
: Premature Maturity
: Article URL: http://www.slate.com/id/2264500/
: Are children today really going through puberty earlier?
: By Darshak Sanghavi
: Posted Thursday, Aug. 19, 2010, at 1:21 PM ET
: In 1977, hundreds of young Italian boys and girls attending a school near
: Milan suddenly began growing breasts. A subsequent investigation published
: in the Lancet suggested that contaminated beef and poultry were the likely
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