Hi aLL, I h ave my ileostomy for over 55 y ears, since I was 15, and for most of that time the only problem I had was with, raw veggies ( celery, cabbage, ) and some nuts... My out put was sometimes watery, b ut generally speakin g it was " normaly liquid/ muddy range... I alway drank a lot ( of plain water) and rarely had issues of dehydration... the more I drank, the more I peed, and the guide for t hat, the paler the better...If it was yellow, I needed more water... All was fine until a few years a go.. I started to fill with explosions of gas, and e ven though I switched to a pouch ( convatec) with a vent....I found the gas con tinued ending up in liquid...an d then green liquid, and t hen almost yellow liquid.. In the last 2 years Iv'e been hosspitalized 2x for dehydration, with no real pathology, infection, or cause... I finally went to my gastro dr... ( who I had not seen in years), and he diagnosed it immediaately... Since I dont have any large intestine , he said I might be missing specific enzymes ( ?) to digest some foods... My output often had a very foul odor, which I never had in the 5o years of having an ostomy.. He recommended r eading up, and trying to follow the FODMAP Diet... It's based on eleminating the hard to digest sugars, & carbs/ & artificial sugars th at are found in many vegetables, and f ruits and juices ( tomatoes, lemon limes, som e green veggies , garlic, onions, artificial sweetners and carbonated drinks as well.. ) I wa s devestasted, and felt like I wa s back to that teen with ulcerative colitis. / back to a very limited diet.. But I did a lot of reading...and categorized t he specific foods . Once you eliminate the " identified" problem fooods, it's ok to t ry them ( one at a time) on ocassion.... Like allergy/ taste testing... I love pizza and Italian food, but I react to tomatoes, so I only have a little sauce, or a piece of pizza... I can cook with onions and garlic , but it's best if I don't eat much of either... At the time I was guzzling lemon crystle lite, buy it's no longer on my list.. Hard cheeses are ok, but soft cheeses may cause problems.. I avoid most dairy, but use almond milk.....if I have to have milk, I do indulge in ice cream ocassionally... Just not every day. It's a challen ge, and it makes preparting some of m y favorite dishes a bit difficult.. but I've noticed major chan ges, a nd more con sistant output. My pouch was filling with gas 2-3 times a night , and I had to get up to release it, or I would break the seal on my wafer... That's improved with the diet, and sometimes, I don't even have to em pty...So if you're have s pecific issues/ related to gas, and foods, check out the FODMAP diet.. It might work for you.... Best of luck to all... Marsha