Omega-3 Fatty Acids for Fibrinogen Reduction
Omega-3s reliably lower triglycerides and inflammation, but their effect on fibrinogen specifically is inconsistent across trials.
Overview
Verdict
Good for the underlying inflammatory picture; unreliable as a fibrinogen-specific lever.
How It Works
Dosing & Protocol
Typical dose
- Recommended dose
- 2 g combined EPA/DHA daily with food
- Expected timeframe
- 12 weeks
Protocol
- form
- Fish oil or algal oil
- duration
- 8-12 weeks, with fibrinogen rechecked
- co factor
- Take with meals. Evidence is mixed. Randomised trials examining fibrinogen with omega-3 supplementation have produced inconsistent results - some report modest reductions, others no change, and a few report small increases, with meta-analyses generally concluding no reliable effect. This contrasts with omega-3 more consistent effects on triglycerides, blood pressure and platelet function. Where omega-3 does affect haemostasis is through reduced platelet aggregation via decreased thromboxane A2 production, and through modest effects on blood viscosity - mechanisms distinct from fibrinogen synthesis, which is hepatic and largely driven by IL-6 during acute phase responses. Any fibrinogen change likely reflects the general anti-inflammatory effect rather than a direct action.
- titration
- Up to 3,000 mg/day EPA+DHA; trials examining fibrinogen used 2,000-4,000 mg/day
- starting dose
- 1,000 mg/day combined EPA+DHA with a meal
Evidence
What the studies say
Effects of omega-3 polyunsaturated fatty acids on plasma indices of thrombogenesis and inflammation in patients post-myocardial infarction
Omega-3 supplementation after myocardial infarction did not significantly reduce plasma fibrinogen versus usual care.
Significant differential effects of omega-3 fatty acids and fenofibrate in patients with hypertriglyceridemia
Omega-3 fatty acids therapy decreased triglycerides by 21% in patients with hypertriglyceridemia.
Safety
Caveats
May increase bleeding risk at high doses alongside other blood thinners. Some people see a modest LDL rise.
Less likely to help if
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