Glucomannan
Also known as: konjac root, Amorphophallus konjac
Effective Dosage
1-4 g daily
✓ What the Science Says
Glucomannan is a water-soluble dietary fiber that has been shown to aid in weight loss by promoting a feeling of fullness and reducing appetite. It may also help improve cholesterol levels and support gut health by acting as a prebiotic.
✗ What It Doesn't Do
Glucomannan does not magically melt away fat or replace a healthy diet and exercise. It is not a substitute for a balanced lifestyle and should not be relied upon as a sole weight loss method.
Evidence-Based Benefits
Glucomannan is a water-soluble dietary fiber that has been shown to aid in weight loss by promoting a feeling of fullness and reducing appetite. It may also help improve cholesterol levels and support gut health by acting as a prebiotic.
Strong EvidenceEffective at: 1-4 g daily
Source: auto-research
Absorption & Bioavailability
Poor - Glucomannan is not absorbed in the digestive tract and works primarily by absorbing water and expanding in the stomach.
Red Flags to Watch For
- 🚩 Claims of miraculous weight loss without diet or exercise
- 🚩 Products with added sugars or fillers that dilute the effectiveness
Research Sources
- PubMed
- NIH DSLD
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-02-05