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Extra calories burned during PMS or ttom???


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Hey everyone...I already posted this in one forum but I wanted to post it here too...I'm just dying to know!!!!!

A girl once told me that you burn like 2,000 extra calories a day when you're on your period...maybe she was just trying to get me fat.  I want to eat everything in sight when I'm PMS-ing and when I'm surfing the crimson wave...

Sooooo, I'm wondering if anybody knows if we actually burn significantly more calories before and during menstruation...and approximately how many more calories do we burn?

P.S. sorry if this stuff grosses anybody out...

Edited Nov 13 2008 09:21 by lalabanana
Reason: Moved to Health and Support.
17 Replies (last)

OK, it's definitely not 2000 calories. If your body was burning that much, you'd be STARVING! But maybe I'm different. My appetite doesn't really change at all during my period.

I think it's about 200 extra calories per day.  Definitely not 2000!  Smile

I so didn't know that! Soo indulging in a teensy bit of choc at that time doesn't hurt yay :D

Quoted from duplicate thread:

Original Post by minerva_moon:

There's really no conclusive research on either side, so you'll get people who say "yes, you do burn more calories" and people who say "no, you don't burn any extra calories". However, if you do burn more calories, it's no where NEAR an extra 2,000. The number often quoted from the 'yes' side is an extra 200-300 a day.

Please don't double post in the future.

I agree with lalabanana...There is no real proof that to you do really burn 200 extra calories each day while on your ttom or on your period. It would make sense to burn a few more during ovulation, since your body is working on something else inside of you...but you can never be too sure. Cravings during PMS are quite normal, but they are not caused by "extra calories being burned". Remember that during PMS you have quite some drastic shifts in your hormones that can cause a lot of different sensations...from cravings, irritabilty, mood swings, to gaining a few pounds and having your boobs grow to the size of two big bowling balls.


btw, your friend is crazy lol or really trying to make you fat indeed...its completely impossible to burn off 2,000 calories by just menstruating.

 

take care

I believe that you can burn somewhere around 200 extra cals during that week. I learned that by just giving blood at a blood bank you can burn between 600-700 cals. Since you dont bleed a liter of blood a week (sometimes id like to think diff) I would assume it to be alot less than the 600 cals. not significant amount of cals but still cals burned. Just dont eat it back so its worth it. lol

I work in research regarding the menstrual cycle.  There's no evidence that this is true.  Plus, if you think about it, it doesn't really make sense that you would burn more calories during this time.  During the times of the month you are not menstrating you are building the lining of your uterus - this causes your body to work.  When you are actively bleeding all that is happening is the lining of your uterus is shedding - no work, it just 'falls off'.   So, when you think about how it all happens it really is not like donating blood.

Well I think its possible to burn some extra calories while on your period. For some reason I tend to get hungry very quckly and alot more often while on my period...so I dont know. But I hope its true, because I eat more on my period lol.

Original Post by alle0299:

I work in research regarding the menstrual cycle.  There's no evidence that this is true.  Plus, if you think about it, it doesn't really make sense that you would burn more calories during this time.  During the times of the month you are not menstrating you are building the lining of your uterus - this causes your body to work.  When you are actively bleeding all that is happening is the lining of your uterus is shedding - no work, it just 'falls off'.   So, when you think about how it all happens it really is not like donating blood.

 If we are getting technical, we have to replace the blood lost.  Our body has to undergo hematopoeisis just like when we donate blood..  I don't think it's too inconceivable to believe that we burn an extra 100-200.  However I'm not going to rely on it

Original Post by boha0034:

Original Post by alle0299:

I work in research regarding the menstrual cycle.  There's no evidence that this is true.  Plus, if you think about it, it doesn't really make sense that you would burn more calories during this time.  During the times of the month you are not menstrating you are building the lining of your uterus - this causes your body to work.  When you are actively bleeding all that is happening is the lining of your uterus is shedding - no work, it just 'falls off'.   So, when you think about how it all happens it really is not like donating blood.

 If we are getting technical, we have to replace the blood lost.  Our body has to undergo hematopoeisis just like when we donate blood..  I don't think it's too inconceivable to believe that we burn an extra 100-200.  However I'm not going to rely on it

 I wouldnt rely on the extra calories burned either. Its not even that significant to count since its probably only 100-200 within a week span, not a day. the lining isnt just falling off/out of your uterus, the uterus is also contracting to move everything along and out.

Original Post by boha0034:

Original Post by alle0299:

I work in research regarding the menstrual cycle.  There's no evidence that this is true.  Plus, if you think about it, it doesn't really make sense that you would burn more calories during this time.  During the times of the month you are not menstrating you are building the lining of your uterus - this causes your body to work.  When you are actively bleeding all that is happening is the lining of your uterus is shedding - no work, it just 'falls off'.   So, when you think about how it all happens it really is not like donating blood.

 If we are getting technical, we have to replace the blood lost.  Our body has to undergo hematopoeisis just like when we donate blood..  I don't think it's too inconceivable to believe that we burn an extra 100-200.  However I'm not going to rely on it

Sure, let's get technical then let's say it takes 200 calories for the sake of arguement to make that blood.  Let's also say that we have a typical 28-day cycle with 5 days of menses.  That would mean you probably have about 19 days of endometrium growth.  So, on average, during those 19 days you need an additional 10.5 calories per day to replace the blood goes into the endometrium.     The blood you are losing when you have your period is not 'new' blood that needs to be replaced.  So, if you want to make up the extra calories then eat an additional 11 calories per day three weeks of the month. 

 

Well I for one know I burn more calories during menstruation, because of the observation that I've typically lost more weight during these times doing nothing different.  Hormones are known to be vital to any body process, so it's not crazy to think that the spike in hormone that makes our uterine lining shed also gives our metabolism a little boost.

Same here. Maybe there aren't 100% conclusive medical tests proving this theory, but seeing as I ate about 1000 calories over maintenance yesterday and was still ravenous, and weighed down 2 lbs (both on home scale & gym scale), my body must be a medical mystery! Ooooohh.

 

Its like clockwork during ovulation for me. Who knows. I tend to believe it is true (although I have trouble approximating an amount of calories burned).

I have read many of your responses and while I cannot say for sure for anyone else... I have made a thorough chart. I keep track of all calories eaten and calories burned. I have also record my weight each day. What I have seen from this data is that a few days right before my period starts, I lost more weight consuming the calories needed to loose weight than during other times.  I would say that with my weight lose dropping a couple pounds during those 3-4 days instead of usually .2-.5 pounds, women do burn 100-200 calories during 3-4 days before the period starts. But once again, each woman's body is different and may burn more or none at all during this time period. If you really want to know the answer to this question for yourself I recommend you to keep track of all your own data of weight/calories consumed/ calories burned/etc. If you do this, you will probably find out what calories you need to consume to burn the weight desired while also finding out what happens around your menstruation. Good luck!

Just want to point out that the loss of blood isn't the only reason (or the reason at all) that your metabolism revs a little (200-300 calories?) before-not during- your period.  The change in the balance of hormones is the suspected reason (I'm thinking it's the lowered estrogen, but it's been awhile since I've done the research).  That's also one of the reasons that women with PCOS have lower metabolic rates than normal women.

I have very severe cramping, fevers, and frequently vomiting during the 1-2 weeks before and the first 3-4 days of my period. I tend to lose 2-5 pounds during the 2 days before and the 2 days after my period, and my body loses significant energy to the cramping and fevers. I think in cases like this, women definitely burn extra calories during their periods. If you have a normal period, you probably do not burn nearly as many calories. I also tend to regain 1-3 of those pounds by the second week after my period.

 

Actually your metabolic rate does change due to hormonal fluctuations and cellular activity relating to your cycle. There will not be a set number of calories burned because that increased percentage will affect every woman differently depending on her normal BMR. For most women there is an increased BMR - which is why you get hungry so trust your body it knows what it needs. There are plenty of articles siting this if you look for the right things. Also I have seen research that women on hormonal supplements such as birth control pills are less likely to experience BMR fluctuations around their cycles. To the woman doing "research" and stating this isn't true . . . .please do more research.

 

https://www.thecupsdiet.com/index.cfm?action= cIntro.dspBMR

 http://www.ncbi.nlm.nih.gov/pubmed/2758017

 http://journals.cambridge.org/download.php?fi le=%2FBJN%2FBJN61_03%2FS0007114589000711a.pdf &code=92fdeb10dbf12aae7fc0936b8a4b398c

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