when 2 women of menstruating years live together or work together that we roughly get our periods at roughly the same time? i've always wondered why?
2007-06-23 00:31:25 · 17 answers · asked by Anonymous in Health ➔ Women's Health
It is well known that women who live in close quarters with each other tend to
synchronize their menstrual cycles. What is not known so well is the exact
mechanism by which this occurs. The best idea is that there must be a small
molecule that acts as a pheromone. The idea is that it stimulates the lining of
the nose (like any other molecule which transmits smell information) which in
turn sends a chemical message to the brain. The brain, in turn, sends its
hormone messages to the ovaries and uterus, thereby changing the cycle.
Why this mechanism evolved in the first place is a difficult question. It
probably had something to do with keeping all the women of a social group or
clan on the same cycle, maybe for child-rearing purposes.
2007-06-23 00:39:31 · answer #1 · answered by emtd65 7 · 4⤊ 0⤋
The synchronisation of menstrual cycles is due to the pheromones that women secrete when living together.
The original reason for this was when hominids lived in packs and were hunter gatherers moving from place to place it was important that everyone became pregnant at about the same time. This meant that the time to move could be chosen so that there were were few if any very pregnant females. Most packs of animals still operate this system, it is called the mating season.
2007-06-23 08:32:44 · answer #2 · answered by Dr Frank 7 · 1⤊ 0⤋
It's completely scientific! I remeber learning about this during A Level biology.
The release of pheromones during a period seems to make other girls (who are more susceptive during ovulation) around you respond by starting their own menstrual cycles. Given time, any number of girls will "align" and start and stop their cycles at the same time.
For more statistics check out:
http://www.teengrowth.com/index.cfm?action=info_advice&ID_Advice=11808&category=Body&catdesc=Body&subdesc=Menstruation
http://www.alanat.com/women/readers-share-stories-of-shared-periods-13/
http://www.scarleteen.com/cgi-bin/forum/ultimatebb.cgi?ubb=get_topic;f=1;t=004302;p=0
http://www.msnbc.msn.com/id/17134800/
2007-06-23 09:03:22 · answer #3 · answered by Mike T 6 · 1⤊ 0⤋
Cause when we were monkeys ( some men still are) we lived in groups and its always safer for groups of females to birth all together. because we were food to other bigger animals back then. Like other mammals around today like wildebeast. Well thats my theory anyway dunno how true it is lol
2007-06-23 07:36:27 · answer #4 · answered by HeatherzFeatherz 4 · 1⤊ 0⤋
Is it because we cannot and will not be outdone by another female in the vicinity and therefore must be more moany, heavy or bloaty perhaps?
2007-06-23 07:37:32 · answer #5 · answered by Anonymous · 0⤊ 0⤋
It's sympathetic cycle! If u r same age, share the same environment, eat the same diet, and follow the same routine, perhaps it has effect on your mens. cycle too. There can't b anyother explanation I think.
2007-06-23 07:33:53 · answer #6 · answered by aWellWisher 7 · 0⤊ 1⤋
we had this at home, my mom, sister and I would menstruate at the same time!
strange!!
2007-06-23 07:40:16 · answer #7 · answered by Rebz 5 · 1⤊ 0⤋
u get it once a month but the two women i dont undrstand
2007-06-23 07:55:54 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Only mother nature has the answer to that one I'm afraid.
2007-06-23 08:00:24 · answer #9 · answered by Black 7 · 0⤊ 1⤋
Something to do with the rays of the moon....
2007-06-23 07:34:47 · answer #10 · answered by novembr 5 · 0⤊ 0⤋