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Glucomannan
Glucomannan is a water-soluble dietary fiber that is derived from konjac root (Amorphophallus konjac). Like other forms of dietary fiber, glucomannan is considered a “bulk-forming laxative.” Glucomannan promotes a larger, bulkier stool that passes through the colon more easily and requires less pressure—and subsequently less straining—to expel.
- Reliable and relatively consistent scientific data showing a substantial health benefit.
- Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit.
- This interaction is supported only by weak, fragmentary, and/or contradictory scientific evidence.
Our proprietary “Star-Rating” system was developed to help you easily understand the amount of scientific support behind each supplement in relation to a specific health condition. While there is no way to predict whether a vitamin, mineral, or herb will successfully treat or prevent associated health conditions, our unique ratings tell you how well these supplements are understood by the medical community, and whether studies have found them to be effective for other people.
For over a decade, our team has combed through thousands of research articles published in reputable journals. To help you make educated decisions, and to better understand controversial or confusing supplements, our medical experts have digested the science into these three easy-to-follow ratings. We hope this provides you with a helpful resource to make informed decisions towards your health and well-being.
This supplement has been used in connection with the following health conditions:
| Used for | Amount | Why |
|---|---|---|
Constipation | 3 to 4 grams daily in water, followed by a second glass of water |  [3 stars] Glucomannan is a water-soluble dietary fiber that has shown to be effective as a bulk-forming laxative. |
High Cholesterol | 4 to 13 grams daily | [3 stars] Glucomannan is a water-soluble dietary fiber that has been shown to significantly reduce total blood cholesterol, LDL cholesterol, and triglycerides, and to raise HDL cholesterol. |
Insulin Resistance Syndrome | 8 to 13 grams daily | [3 stars] Taking a glucomannan fiber supplement may improve blood cholesterol and blood sugar. |
Type 2 Diabetes | 500 to 700 mg per 100 calories in the diet | [3 stars] Glucomannan delays stomach emptying, leading to more gradual sugar absorption and lower blood sugar levels after meals. |
Childhood Obesity | 2 to 3 grams daily |  [2 stars] Glucomannan, a type of fiber, dilutes calories, slows down the eating process, and may make people feel more full despite eating fewer calories. |
Obesity | Adults: 3 to 4 grams daily; adolescents: 2 to 3 grams daily | [2 stars] Supplementing with glucomannan, a bulking agent, has promoted weight loss in overweight adults. |
Diverticular Disease | Refer to label instructions |  [1 star] Glucomannan is a water-soluble dietary fiber. One study found that people with diverticular disease had reduced symptoms after taking glucommanan. |
Hypoglycemia | Refer to label instructions | [1 star] Glucomannan is a water-soluble dietary fiber. In one trial, adding glucomannan to a meal prevented hypoglycemia in adults with previous stomach surgery. |
Type 1 Diabetes | Refer to label instructions | [1 star] Glucomannan delays stomach emptying, leading to more gradual sugar absorption and possibly lowering insulin requirements for people with type 1 diabetes. |
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The information presented in Aisle7 is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. Self-treatment is not recommended for life-threatening conditions that require medical treatment under a doctor's care. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires June 2013.
