Your body starts to process some of it as soon as you eat it. This is the reason most bulimics don't fluctuate in weight as much as anorexics. Even if you are expelling food your body is still absorbing some of the calories. Food doesn't leave your stomach all at the same time and the rate that it does depends on the composition of food. If its really high in processed sugar its gonna get absorbed, leave your stomach and enter your blood stream really quickly.

I know its not as simple as this but try and remember before purging that its not really as corrective as it feels. The best thing to do after a binge is not to purge it and just sit with the feelings and try and develop a different coping mechanism.

 

Your body starts to process it as soon as you eat it. This is the reason most bulimics don't fluctuate in weight as much as anorexics. Even if you are expelling food your body is still absorbing a lot of the calories. Food doesn't leave your stomach all at the same time and the rate that it does depends on the composition of food. If its really high in processed sugar its gonna get absorbed, leave your stomach and enter your blood stream really quickly.

I know its not as simple as this but try and remember before purging that its not really as corrective as it feels. The best thing to do after a binge is not to purge it and just sit with the feelings and try and develop a different coping mechanism.

This is the biggest lie I have ever seen lol don't listen to this person. If this were the case I wouldn't be underweight for over 6 years. It depends on each person so I can wait an hour before I purge and still be ok. My digestion has slowed down a lot though. I get trying to get a person to stop purging but lying and saying your body breaks it down right away is ridiculous.

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Here's a chart for approximate digestion times (time until food leaves the stomach).

Calories are absorbed in the small intestine, not the stomach. Except for sugar, but it's a tiny amount. I believe alcohol is absorbed in the stomach too. Depending on what you eat you have from around 20 min to 5 hours. Everyone is different so it may take more or less time for you. I usually start with some protein, something with a high amount of fat, or veggies so my digestion slows down then I purge within 1 or 2 hours. Sometimes I can get stuff up from 4 or more hours earlier. A quick google search will find more examples of digestion times.

 

Over time b/p will drastically slow your digestion. After years of this, I binge daily for 1-2 hours on 5k+ calories and don't gain.

But even for a normal person, absorption of calories does not begin immediately. The misconception is such bs. Depending on the food it's usually 20mins+, longer for vegies etc.

 

Not sure how science that I learned in a science nutrition degree is lie but whatever.

I wasn't meaning everything you eat is immediately digested, it takes ages for everything to leave your stomach. I may not have phrased it well. I meant stuff starts to leave your stomach like glucose leaves pretty quickly because it breaks down quite quickly and can transfer to the small intestine quickly. Some is even absorbed by the stomach and taken straight to the liver which is why your blood sugar can be be really affected by high sugar foods really quickly. Not all of it does, but it starts to in really small amounts pretty soon. It doesn't all leave at once. And its just statistics that most bulimics aren't normally underweight or emaciated like anorexics even if they vomit after every binge. Binging takes time and by the end of the binge even if you get up everything in your stomach, some of the stuff from early in the binge has probably started leaving the stomach.

Foods high in protein or fat stay in the stomach longer as they need more mechanical digestion time so the rate that they get squeezed out of the stomach is slower, but even so little bits do start leaving pretty quickly as well. Obviously not all of it.

And everyone is different so saying you are malnourished from purging doesn't mean everyone is, you might just have a faster digestive system than other people.

 

My binge lasts for about an hour, I start purging from 15 mins since the last thing consumed. Everything gets "mixed" in my stomach so I don't actually know if I got nearly everything up, I don't always rinse but I have managed to mantain my BMI at 16-17 for years (with fluctuations every now and then but never over 17.9) despite eating & keeping food down outside my binges

 

i can purge up to an hour after i eat & i'll still lose weight pretty quickly