Question
Sun August 17, 2008 By:

why the breast size increases in girls at the time of puberty as compared to boys?

Expert Reply
Sun August 17, 2008

This is due to the action of female hormones like estrogen. Estrogen is present in females but not in males. During puberty, there is a surge in the level of estrogen, which causes breast development in females, but not in males.

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