The electroacupuncture according to Voll works like the EKG or EEG and can point out dysfunctions of the whole body. The scientific explanation of the acupuncture measuring is based on the fact, that at the acupuncture points there is a lower value of resistance (respectively a higher electrical conductivity) than on other skin location. Many scientists proved histological, anatomical, morphological, electrophysiological and thermographical characteristics of the acupuncture points. When the metabolism of the organism is abnormal, the electrical behavior of the conductivity changes too. This altered conductivity (respectively the different behavior of the electrical resistance) enables to make conclusions concerning the status of specific organs, parts of organs and functions. With the EAV-diagnosis these little changes are already measurable, before e.g. laboratory technics or imaging diagnostics supply any result. For instance: little malfunctions of the liver metabolism can cause gallstones, which can be detected and corrected by EAV, even before stones develop. So it is possible, to detect and adjust pathological processes in time, enabling a real prophylaxis. The research potential of electroacupunture is very big.