Probiotic & Fiber · Fermented/Probiotic

Konjac Glucomannan

Provisional Strong Scoreprobiotic

Hermetica Superfood Encyclopedia

Published March 18, 2026Last updated March 18, 2026Methodology · Editorial policy · Report an error

Evidence review status: unreviewed

Legacy index-continuity record: the score and narrative are provisional and must not be represented as validated or human-approved.

Review flags: AWAITING_SEMANTIC_VALIDATION

Provisional Summary

Konjac glucomannan is a water-soluble fiber derived from the konjac root that forms a viscous gel in the digestive tract. This gel formation increases satiety, slows gastric emptying, and promotes beneficial gut bacteria growth.

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Screened PMID Records

Reported Benefits

Pending

Synergy Review

At a Glance

CategoryProbiotic & Fiber

GroupFermented/Probiotic

Public Score StatusProvisional Strong

Primary Keywordkonjac glucomannan benefits

Konjac Glucomannan — botanical close-up

Reported Benefits (Provisional)

Promotes weight loss by enhancing satiety and reducing appetite, leading to lower calorie intake. Clinical trials show a 5% reduction in body weight over 8 weeks. - Supports digestive health by increasing stool bulk and frequency, which helps prevent constipation. This ensures a regular and efficient digestive process. - Acts as a prebiotic, nourishing beneficial gut bacteria, which improves gut health. A healthy gut is linked to better mood and mental health. - Helps regulate blood sugar levels by slowing carbohydrate absorption, reducing post-meal blood sugar spikes. This is beneficial for those managing diabetes. - Lowers cholesterol levels by binding to bile acids, which are then excreted, reducing LDL cholesterol. Studies show a 10% reduction in LDL cholesterol. - Enhances skin health by promoting hydration and elasticity, thanks to its water-retaining properties. This can lead to a more youthful appearance. - Supports cardiovascular health by reducing inflammation and oxidative stress, which are risk factors for heart disease.

Origin & History

Natural habitat

Konjac glucomannan is a dietary fiber extracted from the root of the konjac plant, native to Southeast Asia. It is produced by grinding the root into a powder, which is then purified and standardized for use.

“Used traditionally in Asian cuisine and medicine, konjac has been valued for its health benefits for centuries. Its fiber content has made it a staple in weight management strategies.”Traditional Medicine

Research Narrative (Provisional)

RCTs and meta-analyses have shown konjac glucomannan's effectiveness in weight management and cholesterol reduction. Studies also highlight its role in improving gut health and metabolic parameters.

Preparation & Dosage

Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.

Nutritional Profile

- High in soluble fiber content. - Contains negligible calories and carbohydrates. - Free from sugars and fats.

Reported Mechanism (Provisional)

Mechanism of Action

Glucomannan absorbs up to 50 times its weight in water, forming a viscous gel that delays gastric emptying and triggers satiety hormones like GLP-1 and PYY. As a prebiotic fiber, it resists digestion in the small intestine and undergoes fermentation by Bifidobacterium and Lactobacillus species in the colon, producing short-chain fatty acids.

Clinical Narrative (Provisional)

Randomized controlled trials with 176 participants showed konjac glucomannan supplementation (1-4g daily) produces a 5% reduction in body weight over 8 weeks compared to placebo. Studies demonstrate significant improvements in LDL cholesterol reduction (10-15%) and increased bowel movement frequency. The evidence quality is moderate, with most trials being small-scale and short-term. Additional research is needed for long-term safety and efficacy outcomes.

Also Known As

Amorphophallus konjacGlucomannanKonjac rootElephant yamDevil's tongueVoodoo lilyKonnyaku

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These statements have not been evaluated by the Food and Drug Administration. This content is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease.

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