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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鈥� puberty is falling.
(Mother and daughter in the supermarket choosing sanitary items. Getty Images)
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Tim Harford explains the numbers and statistics used in everyday life.
