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Girls On Their Period, Why Do They Sync?

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Dear BeingGirl Experts,

I wanted to know why some family members get their period at the same time.

 

Anna

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Dear Anna,

This is a phenomenon known as menstrual synchrony. It occurs when women share the same living space. Each woman secretes substances called pheromones. These are scents (chemical means of communication) that are undetectable to our conscious sense of smell. However the female who produces the strongest pheromones causes the other females menstrual cycles to move closer to hers.

 

Hope this is helpful

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32
comments so far
anniegirl20
anniegirl20
Posted March 29, 2014
so does that mean me and my mom will be around time?
MiaBella
MiaBella
Posted March 29, 2014
i just got my second period and i am in sync with my friends that have already been getting there period for longer! there are 4 of us
Jeansmbw
Jeansmbw
Posted April 16, 2013
Cool that's interesting
Booboobear678
Booboobear678
Posted March 29, 2014
Is it normal to have the same schedule as your teacher?
Best Dancer1
Best Dancer1
Posted January 03, 2013
It weird because I live 9 hours away from one of my sisters but every time I see her we are both on our periods at the same time.
sweetkitty14
sweetkitty14
Posted October 09, 2012
I didn't even know this! That's weird...but cool at the same time. I've always wondered why my mom and I often get our periods almost at the same week of the month. First she gets hers on the first days, and then I get mine. And my usual 7 day period cut down to 5, just like hers. LoL.
319princess
319princess
Posted July 17, 2012
so, I haven't started yet, but will my mom and I have it at the same time?
jellyebeangirl
jellyebeangirl
Posted July 21, 2012
i never new that , that is kinda cool me an mme an mom dont have the same shedule yet if it will heppen?
musicalgirl12
musicalgirl12
Posted August 09, 2012
319princess u may have it at the same time she did but u might not. my mom had hers at 13 i had mine at 11. so chances r urs wil be around the same time. hope this helped!:)
MustBMe
MustBMe
Posted September 16, 2012
could this be genetic? two of my sisters live with one family, and me and my other sister live with another, but often when we visit we are all on our periods.
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