The age of breast development — which represents the first clinical sign of female puberty — has declined an average three months per decade between 1977 and 2013, according to analysis of data combined from 30 different studies.
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It is never too late to start
The age of breast development — which represents the first clinical sign of female puberty — has declined an average three months per decade between 1977 and 2013, according to analysis of data combined from 30 different studies.
…
The age of breast development — which represents the first clinical sign of female puberty — has declined an average three months per decade between 1977 and 2013, according to analysis of data combined from 30 different studies.
…