Here's what the American College of Gastroenterology lists as the benefits of fiber in the diet:
http://patients.gi.org/topics/digestive ... ips/#bloatKeep in mind that a high-fiber diet may tend to improve:
Chronic constipation
Coronary heart disease
Hemorrhoids
Diabetes mellitus
Diverticular disease
Elevated cholesterol
Irritable bowel syndrome
Colorectal cancer
And yet (as I point out in my book) research shows that there is no convincing evidence that fiber actually protects against the development of colorectal polyps or cancer, nor has it been shown to be provide any help for constipation or any other digestive system symptoms. In a research paper titled Fiber and colorectal diseases: Separating fact from fiction, published in 2007, Tan and Seow-Chen disprove most of those claims and even conclude that fiber appears to make a diverticulosis problem worse, rather than to help. That conclusion is difficult to dispute, considering that despite increasing fiber intake in most developed countries, the prevalence of diverticulosis has continued to increase during recent decades.
http://www.wjgnet.com/1007-9327/13/4161.pdf
If the American College of Gastroentrology doesn't even understand something as basic as fiber in the diet, how can they be expected to understand something as complex as an IBD? And yet they continue to promote these misguided claims.
Tex