Elsevier

Atherosclerosis

Volume 63, Issues 2–3, February 1987, Pages 137-143
Atherosclerosis

Research paper
Effects of a fish oil supplement on serum lipids, blood pressure, bleeding time, haemostatic and rheological variables: A double blind randomised controlled trial in healthy volunteers

https://doi.org/10.1016/0021-9150(87)90113-4Get rights and content

Abstract

Sixty male volunteers were randomised to take 10–16 ml of a fish oil supplement (MaxEPA) or 10–16 ml of olive oil for a period of 3–6 weeks. A fall in serum triglyceride of 54% (P < 0.01) and a fall in diastolic blood pressure of 7% (P < 0.05) was attributable to taking fish oil supplements. The bleeding time was prolonged by 12%, but this did not reach conventional levels of statistical significance. A global test of heparin-neutralising activity, the heparin thrombin clotting time, increased by 14% (P = 0.05) but there was no demonstrable effect on thrombin time, fibrinogen or (intraplatelet) platelet factor 4. A fall in red cell pore transit time of 23% was attributable to fish oil, but was not statistically significant. There was no convincing evidence of an effect of fish oil supplementation on total serum cholesterol, HDL-cholesterol, blood counts or platelet aggregation.

A beneficial effect of fish oil on the cardiovascular risk profile was confirmed in this study. However, with this regime changes in total cholesterol, HDL-cholesterol and platelet aggregation are of unlikely clinical importance.

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    This work was supported by a grant from Seven Seas Health Care Ltd., Hull.

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