granola37 (granola37) wrote in ed_ucate,
granola37
granola37
ed_ucate

Study: Amount of Calories Retained After Binge Eating And Vomiting

It's time to put my nerd cap on. I'm turning off the Plies and putting some Mozart on.
For those of you who don't know me, I'm Granola. I'm bulimic and have been for the past years. I've been eating disordered for about 8 years. I tried to explain the information that I'm about the present in another community, but I don't think the audience was, uh, receptive enough. I'm not trying to beat a dead horse into the ground, but I looked around and didn't see it posted yet.
I'm not an advocate of purging in the least. Unless you're a big fan or heartburn or tooth decay, I don't really see a reason why anyone would want to do it. However, I'm also not an advocate of misinformation. Those who know me know that I'm extremely tired of this particular piece of information:
"Contrary to popular belief, purging isn’t very effective at getting rid of calories, which is why most bulimics end up gaining weight over time. Vomiting immediately after eating will only eliminate 50% of the calories consumed at best—and usually much less. This is because calorie absorption begins the moment you put food in the mouth." - Some credible health website

As most of you know, this piece of information is based on a scientific study. Many of you have probably seen the abstract:
" While caloric consumption during binge eating has been measured, it is not known how many of the calories are retained in the gastrointestinal tract after vomiting. In 17 normal weight bulimic patients, there appeared to be a ceiling on the number of calories retained after vomiting. That is, whether or not bulimic patients had small (mean = 1,549 kcal, SD = 505) or large (mean = 3,530 kcal, SD = 438) binges, they retained similar amounts of kilocalories (mean = 1,128, SD = 497, versus mean = 1,209, SD = 574, respectively) after vomiting."

Those who have taken any sort of research-based class know that you cannot judge an entire study based on it's abstract. When we were in our experimental Psych class, our teacher had us print out and turn in entire articles to make sure that we weren't writing research papers using only an abstract. I'd like to take the time to do a critical analysis on the entire article in order to point out the shortcomings and confounding factors as well as debunk the myth, which was spawned solely from this study, that you retain more than half of the calories from purging.

Without further ado:
I've made jpeg files from a PDF file. Notice my tremendous MSPaint skills. If anyone can't stand the cutting and pasting and wants the PDF file just message me. Beware, this is a long boring post.







Sorry I'm so long-winded. And sorry for any typos. I'm sure there's many.


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