Periods after flying

Hello,

I get the exact same thing. I travel to England quite often from ireland and I get my period a couple of hours after the plane lands. It doesnt matter what stage I am at in my cycle.  The strange thing is that I never get it after flying back home.  I would like to find out why this happens to a minority of women

That's easy. It's because all airplanes are shes.

Everyone knows that females tend to synchronize their periods when they live together.:-)

I fly between Perth & Sydney twice a year which is a 5hr flight and have never had this problem. Howeve I have just retuned to Perth from NY and Toronto. On my way to New York I actually got my period mid flights and it lasted for a whole week despite being a week early and me being on birth control I was very confused and worried as to why this was happening. When I returned 2 weeks later I again 8hrs into my 33hrs of flying got my period, however this time it only lasted 48hrs. I am confused as to how this can happen?

I know that flying between time zones affects your hormones.  It has a great affect on melatonin, which affects other hormones.  It is also stressful to travel or fly and positive or negative stress can also affect hormone levels.  It could also have different affects depending on the direction in time zones that you are flying, I think, since I've just noticed that when I flew east between countries last year my period started right away and lasted around a week, and this time flying in the same direction my period was around a week late (but flying in the opposite direction didn't seem to affect it).  But I've also had a lot of stress lately so I think for me it is related to the flying on top of the stress. 

This is certainly interesting. I don't see how time zones should have anything to do with it. Time zones weren't designed by nature they were created due to the railroads need for a standardized time. The railroads were the first means of transportation that moved east or west fast enough to be affected by the varying sun times. Before the railroads every town or district had their own time based on the sun.

When you travel through several time zones your body's internal clock will be out of sync with sun time and it takes time to adjust but that's only a few hours not enough to make your period noticeably early or late.

I surely like to know how that affects periods. Does any one have a scientific explaination?

I am so interested that other people have this as I thought I must be the only one.  I am 56 years old and go long stretches of time between periods-up to 9 months, but as soon as I fly anywhere I am sure to get my period within a day.  Has anyone received medical advice for this that is beneficial?

I wonder if it has anything to do with the lower air pressure as you gain altitude?

I just Googled because this has happened to me today. It is Sunday and I did an eight-hour flight on Thursday. My period only finished last weekend, so how on earth can I be bleeding again? And damn it, I am finding it difficult to get the supplies I need because I am working :-(