I also have binge-eating tendencies and actually had the same desire (more like urge) to go on a long fast. I didn't because of several reasons:
-I couldn't work out a long enough period of free time for the fast to actually be worth it;
-I though doing it while on a transitional/S€D diet might not be a good idea, especially having deficiencies in certain vitamins and minerals at the time. However me having low levels of vitamins is most likely due to my body's difficulty actually absorbing them, as it was pointed out recently by the family doctor.
-Wasn't sure if the house I live in could be considered a "pristine" enough location, as it is advised by the fasting experts. I live in the suburbs of Brussels, Belgium's capital. Quite a green area actually. Of course it's probably not as ideal of a place as the seaside, or the mountains, or even the forest.
In my case I was actually thinking things over too much, and was going against my intuitive desire to fast, by eating!
What I mean to say is at that time I didn't feel truly hungry for anything. Be it a raw or processed food, if I stopped and listened to my own body, I found that nothing really appealed. My stomach felt full even though I hadn't eaten anything in the past 12-16 hours.
Plus my nose was (and still is) completely clogged up and insensitive to any stimuli (can't smell anything), which one could relate to macro-nutrient overload. I still ate because I thought I wasn't ready to fast yet, and once I had processed food in my mouth it was hard for me to stop at satiety. Actually I went to bed most nights with a full stomach...
Now days are getting chillier here in Belgium, studies just started, so I don't want to be fasting right now either. I'll leave the vulnerability and detox crisis for the warmer Spring days, if I still feel like it.
This Friday however I'm going to see someone who can help me deal with my eating disorder, which I believe has a psychological root rather than physiological.
What I want to point out is that both of us (I assume) felt like fasting as a result of our binge-eating disorder, or the cause of it at least, if you consider binge-eating to be a symptom rather than the origin. It is known that fasting cleans out your body of damaged tissues, toxins and unwanted organic matter, as you body can focus on cleaning and repairing, rather than digestion. That's why you don't usually feel hungry when your ill.
It might be a way of "reseting" your gut flora, if your making that last transition to your new diet/way of life.
After a long enough period of fast, true hunger finally reappears. Not the "It's noon, time to eat" hunger. Real, basic, vital hunger.
^not talking from own experience, but from content written by other people knowledgeable on the matter.
Doesn't mean that you'll never fall back to your old habits ever again, but at least this type of hunger puts you back on the right tracks when it comes to eating the proper amount of food at the appropriate time.
Fasting could also have a psychological effect on you, and make you realize that you never needed to eat this much food to feel good and live good. Especially if the food you ate was mostly junk food, processed food.