Below is a breakdown of each group of FODMAPs and some general information about them. When you initially embark on a low-FODMAP diet, it’s especially important to avoid all FODMAPs, regardless of which category they fall into. Although it’s possible to have more or less sensitivity to one group of FODMAPs than another, every category has the potential to be problematic for people with IBS. This is particularly true if several foods in a group are consumed at one time or if a single food is consumed in excess. In addition, some foods contain more than one type of FODMAP, so it’s not always easy to tell which FODMAP group is responsible for symptoms.