Why is puberty coming earlier for girls today?

Everyone who's been through puberty knows it can be tough. But what if the changes started early -- say at about age 6 or 7? Why are many girls starting puberty so young?

Girls are going through puberty earlier now - setting them up for lifelong problems

What are emotional changes in adolescence?

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How Early Is Too Early for Children to Reach Puberty?

Girls hitting puberty younger and obesity may be the cause, says study – New York Daily News

Puberty In Females and Males Get Facts and Info About Puberty

Boys in USA, like girls, showing signs of early puberty

What is expected to happen to females during puberty? - Quora

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