About 15 years ago I read an article in a medical journal (I may still
have it, but my office is packed from moving) about why menses begins
later in breastfed girls. Does anyone have any articles to cite on this?
It wasn't just with soy-based formulas.  I can't remember if it referred
to puberty in both sexes or just girls.

I know this is totally anecdoctal but both of my older two have gone
through puberty "late" (as in, normal).  My daughter started her periods
at 13 and my son's voice didn't change or growth spurt start until he
was 15.  I have had other parents mention this whose kids were breastfed
a significant amount of time. With all three of my kids (youngest is 11
and no signs of puberty for a while still, I hope!) there were several
girls in their 4th grade classes with breasts. 

Lucy, LCSW, IBCLC
WIC Regional Breastfeeding Support Specialist

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