Vitalism is the belief that living organisms contain force called “the vital energy” ("élan vital") that differs them from non-living things. Sometimes that vital energy is described as soul. The idea of vitalism was popular among the biologist in the 18th and 19th century and they considered that life could not be reduced to a mechanistic (physics) process. With the discovery of genetics and molecular biology dogma, the vitalism “died”. Even though, it is still present in alternative medicine and religion which consider humans as both “mind” and “body”.