Whether or not the explanations or correct or incorrect - the diet does work if you are experiencing diarrhea. When I went to my gastroenterologist, he explained that sometimes there are no answers - only detective work in finding out how you can eat and what your reaction will be to the food. He even said keeping food diaries do not always work because one day you might do well with a food and the next, the same food could cause you distress. You may or may not agree with the explanations that are given - but the outcome works. I am most usually a skeptic and never try anything at all that does not make sense. This did not make sense to me either. But I said - what do I have to lose - so I downloaded the 4 day plan and 5 days later, I have not had diarrhea. Truthfully, all I care about is that I feel well. I am at the point where I am not going to argue over if it makes sense - I am just glad I feel normal again