I think generally too much focus is placed by new J Pouchers on what foods they can digest well, as opposed to what foods and food categories are generally not good for optimal pouch health. Rice seems to be very popular from a digestive standpoint- almost everyone can handle it- but carbs are not good for the pouch, and sugar is worse. I am like CeeCee, I do not limit foods based on what I digest well or not, but rather based on their health value to my Pouch and my body. As a result I do not eat a lot of carbs and sugars. I gave up potatoes, rice, bread, pasta, noodle dishes. I just don't eat them. I eat fruit and yogurt and a lot of salads, and for dinner I will eat meat (chicken, pork, seafood), which I like to make grilled with a fresh salsa, and fresh vegetables. I gave up desserts, sodas, and anything that has a lot of sugar in it. It does make a difference if you have or run into pouch inflammation or SIBO down the road. A strategy that focuses on foods that digest well is generally short-sighted, first because it could lead to bad bacterial levels building over time, thereby causing inflammation, and second because the Pouch changes and adapts and will digest foods it once didn't in the early days. Much of my thinking has been guided by chronic inflammation in my Pouch for over 20 years that was finally put in remission by Remicade, and experimentation with different diets including the Paleo diet, which I eat a modified version of to this date.
I have studied a lot of different diets and researched various authorities and attended lectures given by registered dieticians, and I am convinced that whole foods diets are the best way to go. The heavily processed foods that are prevalent in modern western civilization and to a greater extent in the USA than in other countries are extremely bad for one's general health, stoke inflammatory bowel disease, and many would argue are responsible for the incidence of IBD in the industrialized countries in the first place. I have slowly grown to accept this line of thinking, and have adapted my diet accordingly. I think back to my diet as a kid growing up, and it was almost unthinkably bad, but not really any different than any other American kid growing up as I did in the 1960s and 1970s. As a kid, my lunch would often consist of twinkies, devil dogs and Strawberry Nestle's Quik mixed with milk. Other kids were eating the same crap. These foods are highly processed and filled with addictive preservatives and additives which are designed to artificially increase one's appetite. Hence the absurd levels of obesity in the USA (they made movies about it like "Super Size Me"). Obesity also breeds heart disease, high blood pressure, diabetes and other problems, but also are at the root of causing and/or worsening inflammatory bowel disease.