The following is quoted from an email newsletter from GutSense.org. I'm not shilling for this guy, he just already did the work of summarizing the cited studies:
EDITED: Removed the aforementioned gutsense commentary and replaced it with the study it referenced and described.
Stopping or reducing dietary fiber intake reduces constipation and its associated symptoms
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3435786/
EDITED: Removed the aforementioned gutsense commentary and replaced it with the study it referenced and described.
Stopping or reducing dietary fiber intake reduces constipation and its associated symptoms
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3435786/
RESULTS: The median age of the patients (16 male, 47 female) was 47 years (range, 20-80 years). At 6 mo, 41 patients remained on a no fiber diet, 16 on a reduced fiber diet, and 6 resumed their high fiber diet for religious or personal reasons. Patients who stopped or reduced dietary fiber had significant improvement in their symptoms while those who continued on a high fiber diet had no change. Of those who stopped fiber completely, the bowel frequency increased from one motion in 3.75 d (± 1.59 d) to one motion in 1.0 d (± 0.0 d) (P < 0.001); those with reduced fiber intake had increased bowel frequency from a mean of one motion per 4.19 d (± 2.09 d) to one motion per 1.9 d (± 1.21 d) on a reduced fiber diet (P < 0.001); those who remained on a high fiber diet continued to have a mean of one motion per 6.83 d (± 1.03 d) before and after consultation. For no fiber, reduced fiber and high fiber groups, respectively, symptoms of bloating were present in 0%, 31.3% and 100% (P < 0.001) and straining to pass stools occurred in 0%, 43.8% and 100% (P < 0.001).
CONCLUSION: Idiopathic constipation and its associated symptoms can be effectively reduced by stopping or even lowering the intake of dietary fiber.