Many of you can probably relate to this...
I feel like years of bloating and a distended tummy have made my abs really weak. Even if I eat smaller meals I can tell, because my tummy sticks out a bit. This isn't the case for my friends. They only have that problem after a giant meal. I think that maybe my abs are in the same condition as a woman who has just carried a baby.
I've been on the gluten-free diet for two years. My stomach is definitely flatter (not swollen) because of it. I can wear smaller jeans than I used to, but those hold in my stomach. If I wear something looser I look a lot bigger because I don't have the muscles to hold in my belly. What can I do to fix this? I do crunches, but they don't help much. I also have problems with C a lot (even still, partly because of the weak abs) so I try to avoid ab work on those days.
Advice? What ab workout has given good results? Are my abs permanently damaged from 25 years of distention?
exercise in general is helpful. I'm a group exercise instructor and do a bit of something everyday because it helps so much with my gut issues. 
Protein helps your body repair your muscles and prevents you from getting sore. So make sure there is a decent amount of protein in your diet. Hope this helps a lil.