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Tachycardia after eating a heavy meal?

Please explain why I sometimes get tachycardia within a 1/2 after eating a heavy meal?  The heavy meal usually causes bloating and indigestion, then tachy.  This doesn't happen all of the time, just when the meal is particularly rich with carbohydrates and/or fat.

Thanks
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Wow this is amazing to read all these stories that are the same as mine over the years.   It is reassuring to know we are not alone even though it often feels like  it.   I also have a racing heart after rating and have has for years.  I always thought everyone had that.  I now regulate how much I eat as well.   I have also learned to bear down and bend forward a little to make my heart slow down.   If I press down near my stomach it does help tremendously.  I agree that it is GI and vagus nerve related.  My heart also races everytime I go to sleep.   I put up with it for years thinking it was anxiety until a doctor found that my heart does have signals that are off as recorded on an EKG holter monitor.  This has never shown up again however.     Every doctor I've ever talked to seems like they have never heard of these symptoms before.   I tell them about waking up every night with my heart racing and about the eating issue and they just stare at me not knowing what it is.  
I have been on a beta blocker now for 15 years.  
I've mostly taken Atenelol.  I've also tried Bystolic which made me feel nervous and light headed.
I now take propranalol 60 mg.  It doesn't let my heart race but it makes me really tired.  My heart tries to race and it does pound hard after every meal but instead of 120 bpm it is around 84.  That isn't too high but it's a very hard beat that makes me feel nervous for no reason.  I can never wait for it to be done.   My stomach also blows way up after I eat and that makes my heart go fast too.  It's crazy!
Thanks everyone for sharing your experience.  I'm 46 and have had this since I was young!   People wrote me off with anxiety but I know better.   I've always thought I have a hiatal hernia and GERD ao it's interesting to see the connections on here.  
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And what realy ***** is that ill buy like a 9 inch cuban and know that no matter how hungry I am...I can only eat half or the tachy will hapen
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I have been experiencing the tach after I eat for 4 years too. I thought it had to do with smoking. I quit 7 mos ago and I still get it after heavy meals. 120 bpm is standard. Its actually happening right now lol. What makes it go away in 5 mins fo me is throwing up. I've only done it maybe 30 times in 4 years because it can't be good 4 u. To throw up all the time ..but it works. I just try to eat lighter and it doesn't happen that often. It blows my mind that the medical pros haven't figured out this one yet.
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A related discussion, Hart was started.
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A related discussion, Racing heartbeat was started.
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A related discussion, heart palpitations was started.
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