My wife has IBS/Crohn's and after book after book and days on the internet and a doctor that wanted to put her on a prescription we finally came to find the chief culprits in her case. After reading a book published by a doctor who suffered from Crohn's we eliminated several things from her diet and added some items. Anything with high fructose corn syrup was out, citrus fruits were reduced, sugar consumption was reduced , herbal teas for the tummy are used and an on the shelf digestive product with dicalcium phosphate and magnesium sterate are used. This so far has been working. But the corn syrup is a major player, it's in everything in America. We try to buy European when possible they at least use sugarn their cookies, jam, etc.