Konjac Fibre
Research reviewed: 2003–2018
Konjac Fibre (Amorphophallus konjac fibre) is a dietary supplement with 8 published peer-reviewed studies involving 842 participants, researched for Glycaemic Control, Cholesterol Management, Gut Health and 1 more areas.
Evidence at a Glance
Strength is scored by study design, sample size, study type, and outcomes
Glycaemic Control
StrongCholesterol Management
ModerateGut Health
ModerateSatiety & Weight Management
StrongResearch Visualised
Visual breakdown of the clinical data.
Study Quality Breakdown
What types of studies were conducted
Participants Per Study
Larger samples = more reliable results
Research Timeline
When the studies were published
All Studies
Detailed breakdown of each trial. Click to expand.
Glycaemic Control
Evaluate konjac fibre on postprandial glycaemia in type 2 diabetics
Study Type
Randomised Controlled Trial
Purpose
Evaluate konjac fibre on postprandial glycaemia in type 2 diabetics
Dose
7.6 g/meal
Participants
72
Duration
12 weeks
Results
Significant reduction in postprandial glucose AUC (−25%); HbA1c improved by 0.5%; insulin response normalised
How They Measured It
Postprandial glucose, insulin AUC, HbA1c
Summarise konjac fibre effects on blood glucose control
Study Type
Meta-Analysis
Purpose
Summarise konjac fibre effects on blood glucose control
Dose
3.6–13.3 g/day
Participants
280
Duration
4–16 weeks
Results
Significant reduction in fasting glucose (−0.53 mmol/L) and HbA1c (−0.22%); effects strongest in diabetic populations
How They Measured It
Pooled fasting glucose, HbA1c, postprandial glucose
Cholesterol Management
Test konjac flour supplement for cholesterol reduction
Study Type
Randomised Controlled Trial
Purpose
Test konjac flour supplement for cholesterol reduction
Dose
4.5 g/day konjac flour
Participants
68
Duration
8 weeks
Results
LDL reduced by 16.3%; total cholesterol reduced by 11%; HDL increased by 11%; significant triglyceride reduction
How They Measured It
Total cholesterol, LDL, HDL, triglycerides
Assess konjac on insulin sensitivity and cholesterol
Study Type
Randomised Controlled Trial
Purpose
Assess konjac on insulin sensitivity and cholesterol
Dose
3.9 g/day
Participants
48
Duration
12 weeks
Results
HOMA-IR improved by 23%; LDL reduced by 11%; dual benefit relevant for metabolic syndrome
How They Measured It
Fasting insulin, HOMA-IR, lipid panel
Gut Health
Evaluate konjac fibre as prebiotic on gut microbiome
Study Type
Randomised Controlled Trial
Purpose
Evaluate konjac fibre as prebiotic on gut microbiome
Dose
4 g/day
Participants
55
Duration
8 weeks
Results
Bifidobacterium and Faecalibacterium prausnitzii significantly increased; butyrate elevated; colonic pH reduced
How They Measured It
16S rRNA sequencing, SCFA, intestinal pH
Assess konjac fibre effects on gut microbiome in healthy adults
Study Type
Randomised Controlled Trial
Purpose
Assess konjac fibre effects on gut microbiome in healthy adults
Dose
10 g/day
Participants
40
Duration
8 weeks
Results
Increased microbial diversity; enhanced SCFA production; significant increase in beneficial Bacteroidetes; no adverse GI events
How They Measured It
Metagenomic sequencing, metabolomic profiling
Satiety & Weight Management
Assess konjac fibre on appetite and satiety hormones
Study Type
Randomised Controlled Trial
Purpose
Assess konjac fibre on appetite and satiety hormones
Dose
3 g with water before meals
Participants
50
Duration
4 weeks
Results
Significant reduction in hunger VAS; GLP-1 and CCK increased; ghrelin reduced; spontaneous food intake decreased by 200 kcal/day
How They Measured It
VAS hunger/satiety, GLP-1, CCK, ghrelin
Review konjac for weight and metabolic management
Study Type
Systematic Review
Purpose
Review konjac for weight and metabolic management
Dose
2–4 g/day
Participants
229
Duration
4–16 weeks
Results
Consistent modest weight loss (−0.6 to −1.5 kg); significant reductions in glucose, cholesterol, and appetite; good tolerability
How They Measured It
Systematic review of RCTs; weight and metabolic outcomes
Frequently Asked Questions
Common questions about Konjac Fibre research
There are currently 8 peer-reviewed studies on Konjac Fibre (Amorphophallus konjac fibre), involving 842 total participants. Research covers Glycaemic Control, Cholesterol Management, Gut Health and 1 more areas. The overall evidence strength is rated as Strong.
The evidence is currently rated as "Strong Evidence". This rating is based on study design quality (randomisation, blinding, placebo controls), sample sizes, study types (8 human studies), and reported outcomes.
Konjac Fibre has been researched for: Glycaemic Control, Cholesterol Management, Gut Health, Satiety. Each area has its own body of evidence which you can explore in the study breakdowns above.
Yes, 8 out of 8 studies are human trials. Human trials carry more weight in our evidence scoring system.
Similar Supplements
Other supplements researched for similar health goals
