Natural blood thinner
Doctors were searching for a natural blood thinner and in this study, gave 12 healthy men, average age 22, a single dose of nattokinase (NK), an enzyme from fermented soy. The dose was 2,000 fibrinolytic units of NK or a placebo, in two alternating phases two weeks apart. The men had no blood disorders, were not consuming food natto, had never taken NK, and were taking no other medications. At two and four hours after taking NK, clot-forming action was slightly prolonged, and at six and eight hours, signs of anti-clotting action were increased. All changes were within the normal range.

Reference: Nature Journal Scientific Reports 5; 2015, Article No. 11601.
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