Scientific Opinion
The scientific opinion related to the consumption of konjac glucomannan, published in the 2010 European Food Safety Authority Journal, the Panel on Dietetic Products, Nutrition and Allergies showed glucomannan assisted with the reduction of body weight and maintenance of normal blood cholesterol concentrations.

Glucomannan minimizes the postprandial insulin surge: a potential adjuvant for hepatothermic therapy.
Konjac-mannan (glucomannan) improves glycemia and other associated risk factors for coronary heart disease in type 2 diabetes. A randomized controlled metabolic trial.
A study published in the 1999 American Diabetes Association Diabetes Care Journal, showed that high glucomannan diet improved glycemic control, blood lipid profile and sBP.