Your post John is typical of your bias, dogma and ignorance.
"As a far as vegan diets go, no thanks. Totally unnatural".
Despite the testimonials and the lifestyle of the many that have achieved better and superior health because of it.
AND.....
"if the real underlying problem were resolved, such band aid treatment would not be necessary".
A mostly raw diet that is plant-based does not provide a "band-aid" approach to this problem of IBS and other digestive issues. Your comments are based on ignorance.
Read the websites again and especially the testimonials, you may even learn something of real worth and value.