對於慢性便秘病人，哪種纖維來源最有效？

慢性便秘病人需要增加膳食纖維攝取量，以促進腸道蠕動和增加糞便體積。膳食纖維主要分為水溶性纖維和非水溶性纖維。對於便秘，非水溶性纖維（insoluble fiber）更為有效，因為它不會被消化吸收，能吸收水分，增加糞便的體積和柔軟度，刺激腸壁蠕動，從而加速糞便通過腸道。全穀類食物，如全麥麵包、糙米、燕麥和全穀麥片，是豐富的非水溶性纖維來源。 臨床思路方面，護理師應教育病人選擇未經精製加工的食物，並提醒在增加纖維攝取的同時，也要確保足夠的水分攝取，以避免纖維在腸道中結塊，反而加重便秘。

Clients with chronic constipation need increased dietary fiber to promote bowel motility and increase stool bulk. Fiber is divided into soluble and insoluble types. For constipation, insoluble fiber is most effective because it is not digested or absorbed, absorbs water, increases stool bulk and softness, and stimulates intestinal peristalsis. Whole-grain foods such as whole-wheat bread, brown rice, oats, and whole-grain cereal are rich sources of insoluble fiber. The nurse should also remind the client to drink adequate fluids when increasing fiber intake to avoid worsening constipation from impaction.

美國衛教常提到 Oatmeal 或 Bran；台灣則常提到糙米、地瓜或燕麥。