Superman, I have the same exact problem that you have. Only ive had it for over 3 years now. It started when I was 14 (im now 17), and I go to the bathroom after every meal, anywhere from 1/2 hr to 1 hr after I eat. I am underweight, and have been to over 6 gastrointerologists, just to have it labled as "ibs". They did find 1 thing, I am intolerant to the sugar "fructose", which is in all kinds of stuff. Ive tried elimanating that, and it helped to some extent, but didnt solve the problem. I eat alot throughout the day, but im always hungry about an hr after meals. The only advice I can give you is to start using probiotic suplements, and enzymes, and try avoiding foods that say "high fructose corn syrup" in the ingredient list.

-oh, and I also saw your other post about "primial defense". Very interesting stuff there, I might just try that... Im at the end of my rope on what to do about this, and ill try just about anything now that might have a chance of fixing the problem we have. Anything that says "promotes digestive health", I might just try, lol. Good luck to ya.