Nattokinase: The Natural Blood Thinner that Supports Healthy Blood Pressure, Without Side Effects

Discover the Japanese secret to longevity and cardiovascular health!

The Japanese live longer and healthier than most other people on earth. According to the World Health Organization, not only can Japanese women and men expect to live 86 and 79 years respectively (compared to 80 and 75 years for Americans), but they can also anticipate an average of 75 years of healthy living. One of the reasons are they eat a diet high in fish, vegetables, rice and fermented soy products. As a result, they have a very low incidence of cardiovascular disease.

In 1980 Dr. Hiroyuki Sumi at the University of Chicago Medical School discovered that nattokinase, an enzyme inside natto, supports healthy blood circulation and is effective for preventing blood clots from forming and for dissolving clots that have already formed. Natto reduces the level of fibrin (the protein that accumulates inside blood vessels and clogs them), and helps restore healthy circulation to diseased blood vessels.1

Since most Americans find natto’s smell and taste repulsive, it’s best to take nattokinase in a dietary supplement.

Try Nattokinase NSK-SD

Korean study: nattokinase reduces hypertension

An 8-week, randomized double-blind study examined the effects of nattokinase supplementation on 86 untreated adults with high blood pressure. The participants ranged from 20 to 80 years old, and had a systolic blood pressure of 130 to 159. Systolic pressure is the number on top, (i.e. 120/80) which measures the pressure inside your blood vessels at the moment your heart beats.

The participants were given either a placebo or one capsule of 100 mg. of nattokinase each day. By the end of the trial, blood pressure declined approximately 13/5 mm Hg in the group that received nattokinase, compared with baseline. Compared with the placebo group, those who were given nattokinase showed a statistically significant decline in blood pressure of 5.5/2.8 mm Hg. The reduction in blood pressure confirms previous findings from preliminary studies in rats and case studies in humans, and illustrates how nattokinase supplementation can play an important role in preventing and treating hypertension without side effects.2


  1. “Nattokinase, the “Japanese wonder” gets your blood pumping.”Townsend Letter for Doctors and Patients. 2005. HighBeam Research. (December 17, 2009).
  2. Kim JY, Gum SN, Paik JK, Lim HH, Kim KC, Ogasawara K, Inoue K, Park S, Jang Y, Lee JH. Effects of nattokinase on blood pressure: a randomized, controlled trial. Hypertens Res. 2008 Aug;31(8):1583-8.

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