膳食纤维与肠道健康

Dietary fiber and intestinal health

由于食物的精加工和生活习惯改变,运动减少,现代人的肠道健康状况下降,肠道疾病发病率不断增加,这已经影响到人们的身体健康和日常生活。肠道疾病的发生多与有毒有害物质在肠道内过久滞留,引起肠道环境改变恶化,进而损伤肠道细胞并引发各类炎症有关。本研究综述了59篇有关于膳食纤维和肠道相互作用的文献。研究表明摄入膳食纤维有助于促进肠道蠕动,保持大便顺畅,防止便秘,清除肠道内的有毒有害物质,保持肠道清洁和促进肠道内的益生菌生长等功效。而且,膳食纤维对肠易激综合征,炎症性肠病和肠癌等常见肠道疾病也具有一定的预防和治疗作用。综上,膳食纤维的摄入有益于保持肠道正常生理功能,修复和改善受损肠道环境,对于维护肠道健康有重要意义。

Nowadays, due to processed and refined foods in our diet and lifestyle changes and insufficient exercise, intestinal health status of the population is on the ebb and incidences of intestinal diseases are on the rise, which has been affecting people＇s health and everyday life. Toxic substances overstay in our intestines may deteriorate intestinal environment and then harm intestinal cells and trigger off various types of inflammations. 59 studies with respect to the interaction between dietary fiber and intestines in this literature review. These results indicated that consuming dietary fiber provides multiple health benefits such as improved intestinal motility, regular bowel movements without constipation, removal of toxic and/or harmful substances in the intestines, cleaning bowels and growth of intesti- nal probiotic bacteria. Furthermore, dietary fiber plays some part in prevention and therapy of common intestinal diseases such as Irritable Bowel Syndrome （ IBS）, inflammatory intestinal diseases and colon cancer. In conclusion, dietary fiber intake is beneficial to physiological intestinal function, repairing and improvement of damaged intestinal environment and maintaining intestinal health.