Konjac

Konjac Glucomannan is an important, effective and unique water-soluble dietary fiber contents in the Konjac. Glucomannan is a high molecular polysaccharide with structure as residues of mannose and glucose,swelling by absorbing hundreds times of its weight of water.

In most instances, the research was initiated to elucidate the Konjac glucomannan for the following function claims:

• Promotes weight loss
• Lowers cholesterol and triglyceride levels
• Reduces fat absorption
• Promotes blood sugar control
• Promotes feeling of fullness (satiety)
• Improvement of diet for diabetics

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This soluble fiber has been widely researched to find out what effect it has on obese people: 

One double blind trial over eight weeks gave twenty obese subjects, either two-500mg capsules of purified Glucomannan fiber, or a placebo. These were taken with eight ounces of water, one hour before each of their three daily meals. The participants in this study were told not to change their regular eating habits or usual exercise. The results showed a noteworthy average weight loss of five and a half pounds, in those participants using Glucomannan over the eight-week period, and no side effects were reported. 

Study Shows Glucomannan Effective Cholesterol Control

Additional findings of this study were a reduction of 21.7mg/dl in serum cholesterol, and 15mg/dl reduction in low-density lipoprotein cholesterol in the group treated with the Glucomannan. 

Another study at the University of Tromso in Norway added several kinds of fiber supplements to a calorie controlled diet for subjects who were overweight. The aim of this study was to compare the differences between some of the fiber supplements available on the market for weight loss.