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What is Glucomannan

HealthWhat is Glucomannan

Many will agree that losing weight is not an easy process and long-term success needs perseverance and dedication. In light of this, many diet plans and supplements have been marketed as perfect weight-loss strategies, claiming to do the job quickly. One of these supplements is glucomannan — a natural diet fiber believed to be an effective supplement in losing weight. This article takes an in-depth look at the facts behind glucomannan and whether it is a safe drug.

What is Glucomannan?

As mentioned earlier, glucomannan is a natural dietary fiber that is water-soluble and extracted from roots of the elephant yam, sometimes referred to as konjac.

Glucomannan is available as an additive and supplement in drink mixes as well as an addition to food products like flour and pasta. It is also the major ingredient in shirataki noodles. Glucomannan contains around 40% of an elephant yam’s dry weight, which originates from South East Asia. The product has a long history of being used in traditional foods and herbal mixtures like noodles, tofu, and konjac jelly.

Apart from being marketed as a dietary supplement in the product such as Lipozene, glucomannan is also used as a food additive (emulsifier and thickener). It has an extraordinary ability to absorb water and this makes it one of the most effective dietary fibers known to man. Glucomannan absorbs a lot of liquid such that a small amount of it, when added to a glass of water, turns the content into a gel. These are the properties that are believed to be crucial in weight loss.

How Does Glucomannan Help in Weight Loss

The major reason lies behind the fact that glucomannan is a water-soluble dietary fiber. Just like other fibers that are soluble, glucomannan is believed to promote weight loss in the following ways:

  • It is low on calories: Glucomannan takes up space in your stomach which promotes a feeling of satiety and fullness, bringing down food intake in any given meal.
  • It delays stomach emptying, which contributes to increased satisfaction.
  • It reduces the absorption of fat and protein as other soluble fibers do.
  • Glucomannan feeds the friendly bacteria in your stomach, which turns it into short-chain fatty acids like methylate, shown to prevent fat gain in some studies.

Glucomannan is different from other soluble fibers because it is viscous, making it an ideal component for weight loss.

Does Glucomannan Really Work?

Randomly controlled tests have been done to study the effects of glucomannan on weight loss. These studies are the gold level of scientific study on people. In the study, a total of 176 healthy but overweight individuals on a calorie-restricted diet were assigned either a placebo or glucomannan supplement. After the study, three different types of glucomannan supplements were tested. A few also contained other fibers.

After a period of five weeks, results showed that weight loss was significantly greater among those that were supplemented with glucomannan.


Glucomannan is an ideal weight loss supplement and can deliver results within a period of 2-5 months.

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