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Glucomannan Weight Loss Supplements
Water Soluble Dietary Fiber to Reduce Absorption of Fat and Carbs
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Do Very High Fiber Supplements Help Block Fat Digestion & Reduce Weight?

Glucomannan Weight Loss Supplements

Glucomannan is a water-soluble dietary fiber that is derived from konjac root (Amorphophallus konjac).

Glucomannan and Weight Loss

Like many soluble fibers, glucomannan can bind with a variety of substances in the digestive tract to slow digestion, relieve constipation and reduce the absorption of fat and carbohydrates.

As such, glucomannan is often used in products intended to reduce blood cholesterol and triglyceride levels as well as blood sugar.

Because it can absorb a great deal of water and promote a feeling of fullness, glucomannan is frequently used in supplements intended to promote weight loss.

Glucomannan Weight Loss Supplements - Studies

One double-blind study reported weight loss averaging 5.5 pounds in adults when one gram of glucomannan was taken with a cup of water one hour before each meal for eight weeks.

However, a similar study of overweight children found that glucomannan was not significantly more effective than a placebo.

Other controlled studies have found that glucomannan improves the results of weight loss diets in overweight adults and children.

Glucomannan Weight Loss Supplements - Dosage

Typical dosage recommendations for glucomannan are 1 gram consumed with at least 8 ounces of water approximately one hour prior to a meal (can be repeated 3-4 times per day at each meal). If combined with other fibers, follow the directions on the specific product because different fiber products may have different dosage/use recommendations.

Glucomannan Safety

Like other soluble fibers, glucomannan has the potential to bind with and reduce the absorption of certain nutrients - so a daily multivitamin supplement may be advisable for individuals consuming high doses of glucomannan on a regular basis. In high doses, glucomannan may lead to diarrhea, bloating and flatulence - but cutting back the dose relieves these unpleasant side effects.

 

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