Earthing (grounding) the human body reduces blood viscosity-a major factor in cardiovascular disease.

Chevalier et al, 2013 [pilot study, n=10, male and female, mean age of 54.9], evaluated the effects of 2 hours of grounding on the electrical charge (zeta potential) on red blood cells (RBCs) and the effects on the extent of RBC clumping. Grounding was performed through conductive patches placed on the soles of each subject's feet and palms, with a ground cord attached to a stainless-steel rod inserted in the soil outdoors. Blood samples were obtained by the finger-prick method before and after de procedure. The authors found that Earthing or grounding increased zeta potentials in all samples by an average of 2.70 and significantly reduced RBC aggregation. According to the authors, grounding is virtually harmless, however, there are anecdotal reports that patients using blood-thinning drugs need to monitor their clotting time when they begin to make more frequent conductive contact with the earth.