Hypocholesterolemic action of dietary fiber unrelated to fecal bulking effect
1979
Jenkins, David J.A. | Reynolds, David | Leeds, Anthony R. | Waller, Alexandra L. | Cummings, John H.
An investigation into the relationship of the fecal bulking effects of fiber and blood lipids was undertaken with 22 healthy subjects given a controlled diet to which fiber was added for one of at least 2 trials. Fiber sources were wheat bran, carrot, apple, cabbage, guar or pectin. Total serum cholesterol fell significantly only with guar and pectin; HDL cholesterol decreased significantly only for carrot, though slight decreases were seen for all experimental periods; serum triglyceride showed no significant change. The more efficient bulking agents had no effect on serum cholesterol, while the more refined fibers that did lower serum cholesterol produced slight increases in fecal output. The conclusion seems to be that fecal bulking and the hypocholesterolemic actions of fiber are not related.
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