Many girls are beginning puberty at an early age, developing breasts sooner than girls of previous generations. But the physical changes don't mean the modern girls' emotional and intellectual ...

A girl's genetics can indirectly influence the age when she has her first period, by accelerating her weight gain in childhood, a new study finds. A number of other genes also can directly affect the ...

Girls who grow up eating a healthier diet than their peers may be less likely to get their first menstrual periods at an earlier age — regardless of height or body mass index — a new study suggests.

Girls who grow up eating a healthier diet than their peers may be less likely to get their first menstrual periods at an earlier age — regardless of height or body mass index — a new study suggests.

Puberty isn’t waiting for the teenage years anymore. Experts explain why girls are growing up faster than before ...

The age when girls hit puberty has been falling at an alarming rate for decades, and scientists have struggled to explain why. New research suggests a compound found in a wide variety of products — ...

“Starting in 2010 … we knew that the average age of breast development for a girl fell somewhere between 8 and 9 in this country,” she said. “And for boys, the start of puberty looks like testicular ...

Genes can indirectly influence the age at which girls have their first period by accelerating weight gain in childhood, a known risk factor for early puberty, a Cambridge-led study has found. Other ...

Among 82 girls with infantile hydrocephalus, 21% had precocious puberty before age 8 years and another 29% had early puberty with signs appearing before 8 years and 9 months, found researchers led by ...

Editor’s note: The podcast Chasing Life With Dr. Sanjay Gupta explores the medical science behind some of life’s mysteries big and small. You can listen to episodes here. (CNN) — Puberty: It’s one of ...