Medical Research

The primary ingredient of our ZERO Slim & Healthy Konjac Noodles, Rice & Pasta, Glucomannan, a natural soluble fibre, has been found to possess many health benefits. Below is a list of medical research studies and reports in relation to Glucomannan.


1. Evaluation of the action of glucomannan on metabolic parameters and on the sensation of satiation in overweight and obese patients.

2. Childhood obesity treatment: double blinded trial on dietary fibres (glucomannan) versus placebo.

3. The use of highly purified glucomannan-based fibers in childhood obesity

4. Use of glucomannan in the dietary treatment of severe obesity.

5. Effect of glucomannan on obese patients: a clinical study.


1. Konjac-Mannan and American ginsing: emerging alternative therapies for type 2 diabetes mellitus.

2. Konjac-mannan (glucomannan) improves glycemia and other associated risk factors for coronary heart disease in type 2 diabetes. A randomized controlled metabolic trial.

3. Long-term effects of dietary fiber supplementation on serum glucose and lipoprotein levels in diabetic rats fed a high cholesterol diet.

4. Dietary fiber in the dietetic therapy of diabetes mellitus. Experimental data with purified glucomannans.

5. Beneficial effects of viscous dietary fiber from Konjac-mannan in subjects with the insulin resistance syndrome: results of a controlled metabolic trial.

6. Effect of Konjac food on blood glucose level in patients with diabetes.

7. Effects of long-term high-fiber diet on macrovascular changes and lipid and glucose levels in STZ-induced diabetic SD rats.


1. Effect of short-term ingestion of konjac glucomannan on serum cholesterol in healthy men.

2. Cholesterol reduction by glucomannan and chitosan is mediated by changes in cholesterol absorption and bile acid and fat excretion in rats.

3. Low levels of viscous hydrocolloids lower plasma cholesterol in rats primarily by impairing cholesterol absorption.

4. Effects of dietary konjac mannan on serum and liver cholesterol levels and biliary bile acid composition in hamsters.

5. Influences of refined konjac meal on the levels of tissue lipids and the absorption of four minerals in rats.


1. Effect of the dietary fiber glucomannan on chronic constipation in neurologically impaired children.

2. A clinical study of the use of a combination of glucomannan with lactulose in the constipation of pregnancy.

3. Action of glucomannans on complaints in patients affected with chronic constipation: a multicentric clinical evaluation.

4. Mouth-to-cecum transit time in patients affected by chronic constipation: effect of glucomannan.