Black Soybean Powder May Help Improve Vascular Function and Blood Pressure
Black soybeans are a black variety of the more common yellow soybean. They contain protein, fiber, vitamins, minerals, and antioxidants. According to a new study, black soybean powder may help improve vascular function and blood pressure.
Twenty-two adults with an average age of 45 participated in the study. They consumed a cookie containing 20 grams of black soybean powder or 20 grams of flour daily for 4 weeks. Body composition, vascular function, and blood pressure were evaluated at baseline and at the end of the study.
Vascular function was significantly improved in the black soybean powder group at the end of the study. Vascular age became 3 years younger for that group compared to the beginning of the trial. The vascular age of the black soybean group was 49.3 at the end of the study, compared to 52.2 in the placebo group. The black soybean group also saw significant improvements in vascular waveform, waveform score, and peripheral vascular health compared to the placebo group.
In addition, systolic blood pressure in the black soybean group significantly decreased from 129.4 mmHg to 121.9 mmHg. Blood pressure in the placebo group tended to increase by the end of the study.
The study was conducted by researchers from Kobe University. It was published online ahead of print on September 10, 2020 in the journal Nutrients.