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Are girls starting puberty earlier?

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.

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9 minutes

Last on

Mon 6 Jun 2022 09:50GMT
BBC World Service

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  • Sat 4 Jun 2022 04:50GMT
    BBC World Service
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    BBC World Service

Unlock the history and truth behind the data with The OU

Unlock the history and truth behind the data with The OU

Explore how numbers shape, and sometimes mislead us, with The Open University.

When can you trust statistics?

When can you trust statistics?

BBC Ideas discovers three easy ways to help make sense of statistics.

Podcast

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    Tim Harford explains the numbers and statistics used in everyday life