Increasing dietary fiber intake in terms of kiwifruit improves constipation in Chinese patients

World J Gastroenterol. 2007 Sep 21;13(35):4771-5. doi: 10.3748/wjg.v13.i35.4771.


Aim: To investigate if increased dietary fiber, in terms of kiwifruit, is effective in Chinese constipated patients.

Methods: 33 constipated patients and 20 healthy volunteers were recruited for a 4-wk treatment of kiwi fruit twice daily. Response during wk 1-4 was defined as an increase in complete spontaneous bowl, motion (CSBM) > or = 1/wk. Secondary efficacy included response during wk 1-4, individual symptoms and scores of bowel habits and constipation. Responses were compared with the baseline run-in period. Colonic transit time and anorectal manometry were performed before and after treatment.

Results: Responder rate was 54.5% in the constipated group. The mean CSBM increased after treatment (2.2 +/- 2.6 vs 4.4 +/- 4.6, P = 0.013). There was also improvement in the scores for bothersomeness of constipation (P = 0.02), and satisfaction of bowel habit (P = 0.001), and decreased in days of laxative used (P = 0.003). There was also improvement in transit time (P = 0.003) and rectal sensation (P < 0.05). However, there was no change in the bowel symptoms or anorectal physiology in the healthy subjects.

Conclusion: Increasing dietary fiber intake is effective in relieving chronic constipation in Chinese population.

Publication types

  • Controlled Clinical Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Actinidia*
  • Adult
  • Case-Control Studies
  • China
  • Chronic Disease
  • Constipation / diet therapy*
  • Constipation / physiopathology
  • Dietary Fiber / adverse effects
  • Dietary Fiber / therapeutic use*
  • Female
  • Fruit*
  • Gastrointestinal Motility / physiology
  • Humans
  • Male
  • Middle Aged
  • Phytotherapy / methods