Some foods can make symptoms worse, so it can be very helpful to avoid these. Which ones? Beans, peas, coarse grains, coconut, corn, popcorn, dried fruits, tomatoes, strawberries, cucumbers, and pickles. In addition, it's often a good idea to avoid the skins of fruits and vegetables. Nuts and seeds can be iffy too - ask your doctor. Coffee, tea, and alcohol should be limited, as they can cause constipation.