Supplement
Fucoidan
SaveA sulphated polysaccharide from brown seaweed (Undaria, Fucus) with immune-modulating, anticoagulant, and potential anticancer properties in preclinical studies.
Quick verdict
Rich preclinical biology but limited human data. Immune-modulation and anti-inflammatory effects are most plausible near-term benefits.
Evidence score
A rough internal score reflecting quantity, quality, and consistency of human evidence. Not a clinical recommendation.
What the research shows
Demonstrates selectin-blocking, NK cell activation, and anti-tumour activity in vitro and in animal models. A few small human studies show immune marker changes. Anticancer claims remain preclinical.
Benefits
- Immune-modulating polysaccharide
- Anti-inflammatory via selectin inhibition
- Preclinical anticancer activity
Dosage notes
300–1000 mg/day of fucoidan extract. Source and standardisation vary widely.
Side effects
- GI discomfort
- Potential bleeding risk
- Thyroid effects from iodine content
Who should be cautious
Anticoagulant properties may increase bleeding risk. Iodine content from seaweed may affect thyroid function.
What this page cannot tell you
Molecular weight, sulphation pattern, and source seaweed species all affect bioactivity. Product standardisation is poor.
Leaderboard scores
- Immunity38
- Longevity28
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