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Are girls starting puberty earlier?
We look into a claim that the age that girls start puberty is falling rapidly
In the 1980s, Dr Marcia Herman-Giddens was one of the first people to notice that girls were starting puberty earlier than expected. We talk to Dr Marcia Herman-Giddens and Dr Louise Greenspan about what we know now about whether the age of girls’ puberty is falling.
(Mother and daughter in the supermarket choosing sanitary items. Getty Images)
Podcast
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More or Less: Behind the Stats
Tim Harford investigates numbers in the news: are they always reliable?
