Why was this study done?

The cholesterol-lowering ability of fiber has been well established, but making a fiber supplement palatable can be difficult. This study was designed to investigate a combination fiber product (psyllium, pectin, and guar/locust bean gums – which is generally more palatable) and compare it with guar gum.

What did the study find?

The study found the combination formula had similar cholesterol-lower effects as guar gum in lowering cholesterol and easier for most people to take.

Plasma Cholesterol-Lowering Efficacy of a Mixture of Water Soluble Dietary Fibers (WSDF) Compared to Guar Gum
Authors: Spiller G, et al. International Symposium on Multiple Risk Factors in Cardiovascular Disease, 1990: p. 90.