All patients suffered from high blood pressure and type 2 diabetes. They were divided into two groups: the first ate a diet high in carbohydrates and low in fat. The second group also received pistachios.
It turned out that people who consumed this nut had lower blood pressure and improved heart rates. Scientists believe that the reason is the amino acid L-arginine, which is found in excess in pistachios, and in the body it becomes nitric oxide. This amino acid is essential for vasodilation, resulting in lower blood pressure.
“The pistachio diet significantly reduced total peripheral resistance, increased cardiac output, and improved some measures of heart rate variability. Ambulatory systolic blood pressure dropped significantly after the pistachio diet, with the greatest decrease observed during sleep, ”the researchers said.