Hi, I don't know if you read my subject about how I became addicted to laxatives but I do know that they will destroy your intestine by making it dependant on it and that what ever you poop out has already had the fat taken out of it so you aren't doing a thing but dehydrating your body and making your poo really loose. If you are constipated then go talk to a doctor for a prescription. But you shouldn' t worry unless you go for 5 or 7 days with out a bowel movement. I was going weeks without one and was so addicted to laxatives, suppositories, enimas that I killed my intestine and they had to remove the whole thing....I was only lucky not to be hooked to a colostomy bag yet......But that is not out of my future so just think of having a bag to poo in attached to you for the rest of your life and see if iit is worth it....It isn't!!! I to this day have to be worried about having an accident in my pants!!!!
I also know that when you have a bowel movement it makes your stomach appear very flat. But what has it done for your bottom or legs? What you should do is get into exercise....Whatever you feel badly about eating you can easily burn off with a walk, a bike or some sort of cardiovascular exercise. Just be careful because you can get addicted to that too ( I did)....So if you seriously think a size zero is the right size remember that if your body can't keep that size on normal daily routine then it isn't the right size for you.
You will never get rid of this "disease" of bulemia...It is like alcoholics, you only can be recovering and you need a support group!!!