Favorable long-term effect of a low-fat/high-fiber diet on human blood coagulation and fibrinolysis.
In an 8-month strictly controlled dietary study of 16 healthy young men, the long-term effect of a low-fat (26% of energy) high-fiber (4.5 g/MJ) diet on cardiovascular risk markers of the hemostatic system was assessed. Fasting blood sampling was performed during a 4-week baseline period and then monthly during the intervention. A matched control group of 16 men on habitual diets was also monitored. Median fibrinolytic activity of tissue-type plasminogen activator (t-PA) in plasma was significantly elevated (twofold to fourfold) by the experimental diet. A significant increase in the systemic fibrinolytic activity of the euglobulin fraction of plasma was also observed. Median plasma factor VII coagulant activity (F VIIc) was depressed by 5-10% during the first 2 months and the last month of the study period. The dietary change did not significantly affect plasma levels of fibrinogen, t-PA antigen, or plasminogen activator inhibitor type I antigen. In conclusion, young men who were switched from a typical Danish diet high in saturated fat to a low-fat/high-fiber diet showed a permanent increase in plasma fibrinolytic activity and a biphasic decrease in F VIIc. The dietary change thus had a favorable effect on cardiovascular risk markers of the hemostatic system.
Marckmann
P
P
Research Department of Human Nutrition, Royal Veterinary and Agriculture University, Frederiksberg, Denmark.
Sandström
B
B
Jespersen
J
J
D000328:Adult; D001777:Blood Coagulation / Q000187:drug effects*; D001835:Body Weight / Q000187:drug effects; D004041:Dietary Fats / Q000008:administration & dosage* / Q000494:pharmacology; D004043:Dietary Fiber / Q000008:administration & dosage* / Q000494:pharmacology; D004797:Enzyme-Linked Immunosorbent Assay; D005342:Fibrinolysis / Q000187:drug effects*; D006801:Humans; D008055:Lipids / Q000097:blood; D008297:Male; D017395:Plasminogen Activator Inhibitor 1 / Q000097:blood; D013997:Time Factors; D010959:Tissue Plasminogen Activator / Q000097:blood
D004041:Dietary Fats; D004043:Dietary Fiber; D008055:Lipids; D017395:Plasminogen Activator Inhibitor 1; D010959:Tissue Plasminogen Activator