疑義要點及理由：
下列敘述有關飲食纖維何者為非?
選項(A)水溶性之纖維(例如fruit pectins)是用來治療便秘的。為公布答案
對不起書上翻不到 網路查到的意思為果膠，主要作為果凍的食品添加物
From Wikipedia, the free encyclopedia
Pectin is a structural heteropolysaccharide contained in the primary cell walls of
terrestrial plants. It was first isolated and described in 1825 by Henri
Braconnot[2]. It is produced commercially as a white to light brown powder,
mainly extracted from citrus fruits, and is used in food as a gelling agent
particularly in jams and jellies. It is also used in fillings, sweets, as a
stabilizer in fruit juices and milk drinks and as a source of dietary fiber.
Harrison 16th edition p233有提到
Patients with slow transit constipation are treated with bulk, osmotic,and
^^^^^
stimulant laxatives, including fiber , psyllium, milk of magnesia, lactulose,
^^^^^
polyethylene glycol,and bisacodyl.
水溶性纖維亦符合以上敘述，也是纖維的一種，並沒有contraindication不能拿來治療。
此外若選項(C)正確:水溶性纖維可造成糞便體積加大(bulky stool)，就會有刺激腸胃蠕動之效，我認為
亦有治療便秘的效果，不能算完全錯誤，因此建議送分。
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