Weight Gain and Weight Loss, I had both
Of course when one has razor blade cuts in gut feelings than it's not so easy to want to eat anything. I had near blockage and so before a resection lost a lot of weight since had to be on things all mushed up--and nearly in fluid stages. Most did not digest probably due to pain and the D or going to the restroom too often.
After resection I gained a lot of weight to the point of it feeling like my belly will explode. This is actually a better feeling though than constant pain and so it's exercise that I do to wear it off. I am age 64 and had Crohn's since was a teen if maybe not even before such time.