Glucomannan: 6 Health Benefits, How to Take & Side Effects (2024)

Glucomannanis a plant-basedfiber that is often taken for weight loss. It forms a type of gel in the stomach when consumed, which increasing digestion time and keeping you fuller for longer between meals.

Glucomannanis extracted from Konjac root, a medicinal plant known scientifically as Amorphophallus konjac.It can also be taken tohelpcombat constipation, as it softens the stool and moisturizes it tofacilitate bowel movements.

Glucomannan can be purchasedat pharmacies and health food stores, in the form of supplements in capsules, tablets or powder. Additionally, glucomannan is also used to make flours and pastas, such as shirataki noodles.

Glucomannan: 6 Health Benefits, How to Take & Side Effects (1)

Health benefits

Glucomannan is rich in fiber that can provideseveral health benefits:

1. Promotingweight loss

Glucomannan is rich in soluble fibers that form a type of gel in the stomach. This increases the time it takes forfood to digest, which can helpto control appetite and reduce the amount of food consumed.

2. Regulatingcholesterol and triglyceride levels

Glucomannan helps regulate LDL cholesterol and triglycerides in the blood, as it decreases the absorption of fat from food. It canhelpto prevent diseases such as atherosclerosis, high blood pressure and heart attack.

3. Fighting constipation

Because it is high in fiber, glucomannan helps combat constipation. It increases bulk and water in the stool, to make bowel movements easier.

4. Preventingdiabetes

The fiber present in glucomannan helps to decrease the speed of sugar absorption from food in the intestines. This can help to control blood sugar levels,making it an excellent option for people who have pre-diabetes.

5. Preventingcancer

Glucomannan reduces the risk for colorectal cancer, as it contains soluble fibers that act as a prebiotic. It canfavorthe growth of good bacteria in the intestines tomaintainthe intestinal flora healthy and protectthe intestine.

6. Improving inflammatory bowel diseases

Glucomannan can also help to treat inflammatory bowel diseases, such as ulcerative colitis and Crohn's disease. It helps eliminate harumful bacteria in the intestine, which can reduce swelling and boost immunity.

How to take

Glucomannan should be taken about 30 to60 minutes before the main meals. You can takebetween 500 mg to 4 g of this supplement per day, which should be divided into two doses and always taken with 2 glasses of water.

The use of glucomannan should be done for up to 4 months and only under the direction of a doctor or registered dietitian.

Possible side effects

Takingglucomannan may cause some mild side effects, such as bloating, gas, loose stools, or diarrhea, but these negative effects are uncommon.

When taking glucomannan with little water, the stools can become very dry and hard, causing severe constipation, or even intestinal obstruction, a serious situation that requires immediate medical attention.

Additionally, if glucomannan expands before reaching the stomach, it can cause choking or a blocked throat. Therefore, glucomannan should always be taken with 2 glasses of water.

Contraindications for use

Glucomannan is not recommended for children, pregnant women or breastfeeding women. This supplement is contraindicated for people with a history or activeblockage in the esophagus or stomach, or for those with diseases that cause difficulty swallowing, such as Parkinson's disease, stroke and multiple sclerosis.

People who use hypoglycemic drugs, insulin or any other medication should always consult a doctor before using glucomannan, as this supplement can alter the effect of some medications.

Clinical review:

Karla Leal

Registered Dietitian

Graduated from Grand Rio University with a degree in Nutrition. Licensed to practiced under license # 10100509.

Update History

We regularly update our content with the latest scientific information to maintain an exceptional level of quality.

  • 21 December, 2023 (Current version)

    Updated by Daisy Oliveira - Registered Nurse

  • 2 November, 2023

    Updated by Daisy Oliveira - Registered Nurse

  • 27 October, 2023

    Clinical review by Karla Leal - Registered Dietitian

  • Published in October, 2023

References
  • REIS, Bruna et al. A influência do glucomanano no controlo de peso. Acta Portuguesa de Nutrição. 46-49, 2021
  • FERREIRA Célia. Prebióticos e Probióticos: Atualização e prospecção. 2º. Rio de Janeiro, Brasil: Rubio, 2018. 37-47; 73-90.
  • COSTA Eronita. Nutrição & Fitoterapia. 2º. Brasil: Vozes Ltda, 2011. 162-163.
  • PINTO João. Nutracêuticos e alimentos funcionais. 1º. Portugal: LIDEL, 2014. 258-259.
  • SEIXAS Daniela. Compostos Bioativos dos Alimentos. 1º. São Paulo: VP Editora, 2015. 244-267.
  • SUDHANSHU Behera et al. Konjac glucomannan, a promising polysaccharide of Amorphophallus konjac K. Koch in health care. International Journal of Biological Macromolecules. 92. 942-956, 2016
  • BARTLOMIEJ M. Zalewski et al. The effect of glucomannan on body weight in overweight or obese children and adults: A systematic review of randomized controlled trials. Nutrition. 31. 437–442, 2015
Glucomannan: 6 Health Benefits, How to Take & Side Effects (2024)
Top Articles
Latest Posts
Article information

Author: Domingo Moore

Last Updated:

Views: 5328

Rating: 4.2 / 5 (73 voted)

Reviews: 88% of readers found this page helpful

Author information

Name: Domingo Moore

Birthday: 1997-05-20

Address: 6485 Kohler Route, Antonioton, VT 77375-0299

Phone: +3213869077934

Job: Sales Analyst

Hobby: Kayaking, Roller skating, Cabaret, Rugby, Homebrewing, Creative writing, amateur radio

Introduction: My name is Domingo Moore, I am a attractive, gorgeous, funny, jolly, spotless, nice, fantastic person who loves writing and wants to share my knowledge and understanding with you.