Girls aren't alone in hitting puberty earlier — boys are, too, according to a new study. And boys' body mass index as children might play a role.
Researchers looked through school health records and assessed trends in height and growth for 4,090 boys born in Sweden from 1947 to 1996. Boys born later in that 50-year time period hit puberty sooner. For every decade born later, boys reached peak height velocity, or PHV -- the study's marker for puberty -- 1.5 months earlier.The puberty book that's about more than a girl's periodThe age at PHV became progressively younger for boys born later, dropping from about 14.
However, these findings could still guide pediatricians, who may need to be"more ready to discuss" things like normal body changes, drug and alcohol use, sex and mental health"at a younger age," Breuner said.And while the study showed earlier pubertal timing for boys, it's still not as early as that of girls, who usually hit puberty two years sooner, a fact that's been established in previous studies, according to Breuner.
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