![]() The base liquid, plasma, has low viscosity. Blood is a suspension of red blood cells (erythrocytes), white blood cells (leukocytes) and platelets in plasma, a complex solution of gases, salts, proteins, carbohydrates, and lipids. Here we report our new finding that the blood viscosity can be reduced by pulsed magnetic field. While this issue is very important, currently the only method to reduce the blood viscosity is to take medicine, such as aspirin. When blood is viscous, in addition to a high blood pressure required for the blood circulation, blood vessel walls are also easy to be damaged. Reducing the Viscosity of Blood by Pulsed Magnetic Fieldīlood viscosity is a major player in heart disease. Whole- blood viscosity contributes to the total peripheral resistance, and these results support the hypothesis that insulin resistance has a hemodynamic basis. The present results demonstrate for the first time that there is a negative relationship between directly measured whole- blood viscosity and insulin sensitivity as a part of the insulin-resistance syndrome. Insulin sensitivity index was correlated positively to high-density lipoprotein cholesterol (r = 0.54, P = 0.04) and negatively to serum triglyceride (r = -0.69, P = 0.005) and to total cholesterol (r = -0.81, P = 0.0003) concentrations. Whole- blood viscosity was correlated positively (n = 15) to serum triglyceride (r = 0.54, P = 0.04) and total cholesterol (r = 0.52, P = 0.05), and negatively with high-density lipoprotein cholesterol (r = -0.53, P = 0.04) concentrations. There were statistically significant negative correlations between glucose disposal rate and whole- blood viscosity at low and high shear rates (r = -0.41, P = 0.007 for both, n = 42). ![]() We established a technique for direct measurement of whole- blood viscosity. Healthy young men were examined with the hyperinsulinemic isoglycemic glucose clamp technique, and we related insulin sensitivity (glucose disposal rate) to other metabolic parameters and to blood viscosity. To determine whether directly measured whole- blood viscosity was related to the insulin-resistance syndrome in the same way as calculated viscosity had been found to be. That study was based on calculated viscosity. In a previous study we found that elevated blood viscosity was linked to the insulin resistance syndrome, and we proposed that high blood viscosity may increase insulin resistance. Høieggen, A Fossum, E Moan, A Enger, E Kjeldsen, S E Whole- blood viscosity and the insulin-resistance syndrome. This technology has much potential for physical therapy. In addition, such viscosity reduction does not affect the red blood cells’ normal function. By selecting the magnetic field strength and duration, we can keep the blood viscosity within the normal range. Reapplying the magnetic field reduces the blood viscosity again. After the exposure, in the absence of magnetic field, the blood viscosity slowly moves up, but takes a couple of hours to return to the original value. One magnetic field pulse of 1.3 T lasting Ëœ1 min can reduce the blood viscosity by 20%-30%. ![]() Here we report our finding that blood viscosity can be reduced with magnetic fields of 1 T or above in the blood flow direction. Currently, the only method of treatment is to take drugs such as aspirin, which has, however, several unwanted side effects. When blood viscosity increases, it damages blood vessels and increases the risk of heart attacks. Reducing blood viscosity with magnetic fieldsīlood viscosity is a major factor in heart disease.
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