Testosterone May Delay Boys’ Speech Development Boys tend to talk later than girls; they also acquire language skills at a slower rate than girls. Now new research may point to a reason why. In a newly published study, umbilical cord blood was collected from nearly 900 Australian newborns and tested for testosterone. Newborn boys are exposed to 10 times the levels of testosterone before birth compared to girls. Sex hormones, like testosterone, are known to a play key role in shaping how the brain develops.

Testosterone May Delay Boys’ Speech Development
Boys tend to talk later than girls; they also acquire language skills at a slower rate than girls. Now new research may point to a reason why. In a newly published study, umbilical cord blood was collected from nearly 900 Australian newborns and tested for testosterone. Newborn boys are exposed to 10 times the levels of testosterone before birth compared to girls. Sex hormones, like testosterone, are known to a play key role in shaping how the brain develops.

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