how fast could a baby poop out banana she eats?

I say impossible... I know I posted about this before in response to somebody, but DS tried beets (a pretty big amount for him - like 7-8 bites), and was complaining and in pain in about an hour and thereafter for a few hours. 4 (or maybe 5? - I'd have to search for my post to verify) hours later he pooped straight beets. That is the quickest transit time I've ever seen.

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sorry, how old is she? That would really affect whether or not it came through that quickly. Not age, per se, so much as size and length of intestine. In a child younger than six months, it's entirely possible, in an ten yo, maybe not so much. My son, when 12 mo would get a diaper rash in less than an hour after having wheat, so I'd buy it.

I'm even older , I'm lactose intolerant, and if I have milk, I do have diarrhea within half an hour, so i would buy the idea that if she was reacting to banana, she could have a reaction in that amount of time...even if she's not passing banana itself.

My dad has had transit times that fast, without pain. He took a new medication (with an uniquely shaped pill) and it made its way out about 2 hours later. I handle most of his medical issues so I brought this up with a few of his different doctors. They dubbed it, "normal." And they wonder why he's deficient in B-12 and iron? :

Anyhow, I think that it is entirely possible that it could have been caused by a banana reaction.

It can happen that fast, if she is allergic or it just doesn't sit well then the body will move it out asap. I have a milk intolerance and well...Just trust me on that one.

thanks--I'm torn because--maybe it's the lasting soy or dairy from LAST weekend (or gluten)--- or it could be the steamed carrots or maybe the type of avacados i got (still organic)-or maybe she doesn't like applesauce I made (she's been having cut up raw apples)--I'm torn because I am in this predicament where she has lost 1 1/2 lbs- been trying to feed her more and she' scrying all day from her bum bleeding--yet I gotta get her to gain weight so it's not exactly the most opportune time to pull the onlly three foods that she's done okay with at this time..ya know?!! AH

allergies are so emotional--I am so emotionally tied to this--today my son found his dad's hidden easter candy and by the time I found him he had eaten a tiny snickers (i am in tears thinking about it)--has EGG and dairy (no gluten thankfully)--but he's not even done reacting to last weekend at gmas house--and I know he feels crappy (I gave him benadryl)---anyways I know this is off topic and that probably nobody will read this--but just think this is so hard! which is more important for my dd? do I stop letting my son see gmas and travel? (I try so hard to be careful) I am ready to BAN anything not allergen free from my hubby in this hosue since ds found dad's bread hiddne on the top shelf and almost got some and now his "hidden" candy!- how does he find the 2 things that are hidden and he can't have?!! ah=
okay I'm done--I'll just have to trial banana again in a couple months--

All I can say is that I'm right there with you on the emotional aspect of all of this. You're not alone!

I hope reactions are quickly finished for both of your kiddos.