Time magazine just published an article
about young girls entering puberty earlier and earlier. The article is based on a study that was just published in the journal, Pediatrics
The age of menarche (first period) in white girls has dropped steadily since 1997. During that same period, the age for black girls stayed at the same very low age -- researchers think they may have "bottomed out" already.
While there is still a lot of mystery as to why this is happening, doctors are starting to posit some answers. Increases in childhood obesity and exposure to certain chemicals are two possibilities.
But research also suggests that another factor is at play here -- the father factor (See the name of our blog! Clever, eh?).
I remember once reading about the connection between father absence and the early onset of puberty, so I did a little research and came across a 2003 study called, Father absence, parental care, and female reproductive development" in the journal Evolution and Human Behavior
. Basically, it found that the more time a young girl spends in a father-absent home, the more like it is that she will experience "early reproductive development."
Researchers are also not entirely sure why this happens either, but they posit that if a young girl spends significant time with non-related males, that could trigger menarche. A colleague of mine here at NFI who grew up without her father and had very early menarche thinks that it was a "survival instinct" based on needing to mature much earlier to deal with the added physical and emotional challenges that single-parent households can bring.
It is interesting that where rates of father absence are highest (in the African American community), the age of first period is already at a low point, and where rates of father absence have been increasing, the age has been getting lower.
I am not suggesting that father absence is the only reason for this phenomenon, but it seems to be one of them. And since doctors are concerned about early menarche (longer duration of puberty may affect cancer rates and fertility), they should be concerned about what is happening with fathers.