Supplements · Metabolic & Cardiometabolic
Does ground flaxseed lower bad cholesterol?
The claim, precisely: ground flaxseed decreases LDL cholesterol
Strong support Supplements
RefutedContestedStrong support
consensus score 1.00
Yes, in people with high cholesterol, but it must be ground not whole, and may slightly raise it in healthy people.
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
3 support 0 contradict 0 tested null 0 mixed · 3 sources, 3 independent groups
What the evidence shows
Ground flaxseed lowers LDL/TC/TG in dyslipidemic subjects (and HbA1c in T2D); paradoxically may raise LDL in healthy subjects. Highly bakeable; must be ground, not whole.
The evidence (3)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| (SR/MA 14 RCTs) 2022 · (SR/MA) | meta-analysis | supports | moderate | TC/LDL/TG significantly reduced in dyslipidemic (n=1107); LDL rose in healthy subgroup |
| Schoeneck 2021 2021 · Nutr Metab Cardiovasc Dis | meta-analysis | supports | high | umbrella review confirms flaxseed among LDL-lowering foods |
| Hadi 2020 2020 · Pharmacol Res | meta-analysis | supports | high | 62-RCT dose-response: flaxseed lowers LDL-C, TC, TG |
Educational only, not medical advice. Grades and scores reflect published evidence weighted by study design and quality; see the methodology.