 who do fine with added fiber. They have constipation, they take more fiber, it's all good. There are other people who have a lot of GI distress with fiber. And high fiber diets can be very problematic. And sometimes you have to flip the script and put them on virtually a carnivore diet to alleviate their GI distress. This is part of what is called the FODMAP diet, the low FODMAP diet. It actually restricts certain types of dietary fiber