Supplements · Metabolic & Cardiometabolic

psyllium decreases LDL cholesterol

In plain terms: Does psyllium fibre lower "bad" cholesterol?

Strong support Supplements

Part of: 🧪 psyllium

RefutedContestedStrong support

consensus score 1.00

Yes — well-established across many trials, and gentle on sensitive guts.

📅 Last reviewed: 2026-07-15 ⓘ

Evidence ladder

How far up the ladder this claim has climbed. A high consensus on a low rung means "consistent so far," not "proven in people."

Top evidence so far: All trials, pooled (Meta-analysis)

MechanismIn-vitroAnimalObservationalRCTMeta-analysis

How the studies fall

14 support 0 contradict 0 tested null 0 mixed · 14 sources, 13 independent groups · 1 superseded — pooled inside a review, counted once

What the evidence shows

Psyllium lowers LDL, non-HDL and ApoB (~10 g/d), with FDA-claim precedent in baked/cereal matrices — and it is low-FODMAP / IBS-friendly.

Cochrane agrees with us see how our grade compares ▾

Cochrane · Not reported as GRADE Agrees with our grade

2016 review predates routine GRADE certainty tables); risk of bias unclear/high in most domains, results to be interpreted cautiously

“Cochrane review 'Dietary fibre for the primary prevention of cardiovascular disease' (Hartley 2016, CD011472.pub2) found a significant beneficial effect of increased fibre on LDL cholesterol: mean difference -0.14 mmol/L (95% CI -0.22 to -0.06). Total cholesterol also fell (MD -0.20 mmol/L). Trials were short-term so CVD clinical events could not be assessed. Subgroups analyzed by intervention type (supplement vs food) and fibre type (soluble vs insoluble).”

Why we agree: we reached the same direction independently, from our own appraisal of 14 sources. Two methods landing in the same place is a stronger signal than either alone.

What is Cochrane, and why trust it?

Cochrane produces systematic reviews: instead of running a new study, they gather every trial ever done on a question, judge how well each was run, and pool the results. They take no commercial or industry funding, which is why the medical community treats their reviews as a gold standard — and why we check our own verdicts against theirs.

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The evidence (15)

Source	Grade	Stance	Quality	Finding
Neal 1990 · South Med J	RCT	supports	low	Early controlled trial: psyllium added to a lipid-lowering diet produced synergistic reductions in serum cholesterol/LDL. ↩ SUPERSEDED — pooled in the review above, counted once
Jayaram 2007 · J Indian Med Assoc	RCT	supports	low	RCT: isapgol (psyllium) plus atorvastatin vs atorvastatin alone gave greater hypercholesterolemia improvement, additive LDL lowering.
Sirtori 2009 · Nutr Res Rev	observational	supports	moderate	Review of functional foods for dyslipidemia: psyllium soluble fiber established among effective LDL-lowering dietary agents.
Ribas 2015 · Br J Nutr	RCT	supports	moderate	Randomized placebo-controlled trial: psyllium lowered LDL-cholesterol in Brazilian children and adolescents.
Zhu 2024 · Nutrition Research	meta-analysis	supports	high	Systematic review and meta-analysis: Plantago (psyllium) consumption significantly reduced total and LDL cholesterol in adults.
Jenkins 2005 · Am J Clin Nutr	RCT	supports	high	Dietary portfolio (including psyllium viscous fiber) lowered LDL comparably to a statin in hypercholesterolemic participants.
Pal 2017 · Nutrients	RCT	supports	low	12-month RCT in overweight/obese adults: psyllium fibre supplementation improved lipids including LDL vs control.
Wei 2009 · Eur J Clin Nutr	meta-analysis	supports	moderate	[FT-verified] Wei2009 21RCTs n=1717 LDL -0.278 mmol/L; significant dose-response 3-20g/d
Jovanovski E, et al. 2018 · Am J Clin Nutr	meta-analysis	supports	high	[FT-verified] Jovanovski2018 28RCTs n=1924 LDL MD -0.33 mmol/L (CI -0.38,-0.27); apoB -0.05; GRADE mod-high
Moreyra 2005 · Arch Intern Med	RCT	supports	moderate	RCT: adding psyllium fiber to simvastatin produced greater LDL lowering than statin alone, showing additive cholesterol-lowering effect.
Pal 2011 · Br J Nutr	RCT	supports	moderate	Fibre (psyllium-type) supplement vs healthy diet improved lipids including LDL among overweight/obese adults with metabolic-syndrome risk.
Gholami Z et al 2025 · study_type: meta-analysis	meta-analysis	supports	high	Dose-response MA, 41 RCTs, n=2049: LDL-C WMD -8.55 mg/dL (95% CI -12.92, -4.19; p<0.001); total-C WMD -9.05 (95% CI -13.71, -4.40); high heterogeneity (I2=88.5%)
Schoeneck 2021 2021 · Nutr Metab Cardiovasc Dis	meta-analysis	supports	high	Umbrella review: viscous fibers incl psyllium consistently lower LDL-C with strongest evidence
Juhasz 2023 · Am J Clin Nutr	meta-analysis	supports	high	Network MA in T2D: soluble fibers incl psyllium reduce LDL/lipids
Ganji 1996 · Int J Food Sci Nutr	RCT	supports	low	Psyllium husk supplementation produced a hypocholesterolemic effect in healthy humans on soybean- or coconut-oil-rich diets.

Disagree, or know a study we missed?

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Educational only, not medical advice. Grades and scores reflect published evidence weighted by study design and quality; see the methodology.