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美国一项最新研究发现,美国女孩出现性早熟趋势,青春期明显提前。很多女孩年仅7岁乳房就开始发育。专家认为这一现象可能与饮食及环境中的化学物质破坏荷尔蒙有关。据美国媒体报道,美国俄亥俄州辛辛那提儿童医院青少年医学研
A new study in the United States found that the trend of precocious puberty among American girls is that adolescence is obviously advanced. Many girls start developing at 7 years of age. Experts believe that this phenomenon may be related to diet and the destruction of chemicals in the environment hormones. According to US media reports, the United States Ohio Cincinnati Children’s Hospital adolescent medical research