b9a4451e_Health_Information_Library__Why
[Recommendation] Fill up on fiber, not sugar [Why] 
A high-fiber, low-sugar diet has been shown to be beneficial in people with Crohn's disease. Doctors often suggest eliminating all sugar (including soft drinks and processed foods) from the diet. A person with Crohn's disease might consume more sugar than the average healthy person.2 A high-fiber, low-sugar diet led to a 79% reduction in hospitalizations compared with no dietary change in one group of people with Crohn's disease.3 Another trial compared the effects of high- and low-sugar diets in people with Crohn's disease.4 People with a more active disease were reported to fare better on the low-sugar diet than those eating more sugar. Several people on the high-sugar diet had to stop eating sugar because their disease grew worse. While details of how sugar injures the intestine are still being uncovered, doctors often suggest eliminating all sugar (including soft drinks and processed foods with added sugar) from the diets of those with Crohn's disease.
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