A vitalist is someone who believes that living things are animated by a special force or energy that can’t be fully explained by chemistry and physics alone. This idea, called vitalism, has roots stretching back to ancient philosophy and remains influential today in certain health and wellness circles, even though mainstream science moved away from it nearly two centuries ago.
The Core Idea Behind Vitalism
Vitalism comes in two basic flavors. The first, sometimes called metaphysical vitalism, proposes that a non-physical “life fluid” or vital essence infuses all living things and is what separates them from non-living matter. This force supposedly can’t be detected by physical instruments, which places it outside the reach of conventional scientific investigation.
The second version is more grounded. Often called physical vitalism, it doesn’t necessarily claim there’s a mysterious substance flowing through your body. Instead, it argues that a living organism can’t be reduced to the sum of its parts. A frog is more than a collection of chemicals arranged in a particular way, this view holds, and understanding every molecule still wouldn’t fully explain the frog’s life. This version overlaps with modern ideas about “emergence,” the observation that complex systems can produce behaviors and properties that none of their individual components possess.
Key Figures in Vitalist Thought
The concept has been shaped by thinkers across several centuries. Jean-Baptiste Lamarck, the French biologist better known for his contributions to evolutionary theory, proposed in the late 1700s that organisms possess an ordering “life-power” paired with an inner “adaptive force” that helps them adjust to their environment.
In 1907, French philosopher Henri Bergson introduced one of the most famous vitalist concepts: the “élan vital,” or vital impetus. Bergson argued that Darwinian natural selection alone couldn’t account for the sheer creativity of evolution. Something extra, he believed, was responsible for the innovative complexity of living things and the way organisms develop their forms.
German embryologist Hans Driesch took the idea further in the early 20th century. Working with sea urchin embryos, he observed that separated cells could still develop into complete organisms, which led him to propose a self-organizing principle he called “entelechy,” borrowing from Aristotle. This was a vital force with purpose, one that guided biological processes toward a specific design.
The Experiment That Changed Everything
For most of its history, vitalism rested on a seemingly solid assumption: the chemicals found in living things could only be produced by living things. Some invisible life force was needed to create organic matter. In 1828, German chemist Friedrich Wöhler shattered that assumption by synthesizing urea, a compound found in mammalian urine, from two inorganic chemicals in his laboratory. It was the first time anyone had created an organic compound from non-living ingredients.
This result significantly weakened the vitalist hypothesis, though Wöhler himself was more interested in the chemistry than the philosophical implications. Over the following decades, as scientists synthesized more and more organic compounds in the lab and began unraveling the chemical processes inside cells, the idea that life required a special non-physical force lost most of its scientific support.
Vitalism in Modern Health Practices
Despite its decline in mainstream biology, vitalism is alive and well in many integrative and alternative health traditions. Naturopathic medicine, traditional Chinese medicine, Ayurveda, and various indigenous healing systems all share one key characteristic: they ascribe to some version of the idea that living organisms are sustained by a vital force that is both different from, and greater than, physical and chemical forces.
In naturopathic medicine, this principle is stated explicitly. The first of its six core principles is “vis medicatrix naturae,” Latin for “the healing power of nature.” The formal definition describes it as “the inherent self-organizing and healing process of living systems which establishes, maintains and restores health.” A naturopathic practitioner’s role, under this framework, is to support and facilitate the body’s own healing powers rather than intervene with external treatments. This contrasts with conventional biomedicine, where healing typically occurs through the therapy itself, whether that’s a drug or a surgical procedure.
Contemporary vitalists in healthcare tend to be what scholars call “methodological vitalists.” They don’t claim a mystical substance inhabits the body and directs its chemistry. Instead, they hold that understanding the parts of a living system doesn’t fully explain the whole, and that the body has an inherent, intelligent capacity for self-repair that treatment should work alongside rather than override.
Life Force Across Cultures
The idea of a vital force isn’t unique to Western philosophy. Nearly every major culture has developed its own version. In the Indian tradition, it’s called prana. In Chinese medicine, it’s qi. Japanese traditions call it ki. European traditions have used terms like “universal fluid,” “animal magnetism,” and “odic force.” While these concepts developed independently and carry different cultural meanings, they share the basic premise that some form of subtle energy sustains and animates living things.
In modern research language, these concepts are sometimes grouped under the term “biofield,” an attempt to study the idea of a life-sustaining energy field using scientific methods. The results remain contested, but the persistence of these ideas across so many unrelated cultures is one reason vitalist thinking continues to resonate with people today.
Where Vitalism Stands Now
In mainstream biology, vitalism as a scientific hypothesis is considered outdated. Modern biochemistry, genetics, and molecular biology have explained an enormous range of life processes in purely physical and chemical terms, leaving little room for a non-physical vital force. Most biologists view vitalism as a relic of pre-modern science.
That said, the questions vitalism tried to answer haven’t entirely gone away. How consciousness arises from matter, why living systems behave so differently from non-living ones, and whether organisms are truly just the sum of their parts remain active areas of debate in philosophy and some branches of biology. Physical vitalism, the idea that life has properties that can’t be reduced to simple chemistry, echoes in modern discussions about emergence and complex systems, even if few scientists would use the word “vitalism” to describe their work.
So when someone identifies as a vitalist today, they’re usually expressing one of two things: either a philosophical position that life involves something beyond what current science can measure, or a practical commitment to health approaches that prioritize the body’s self-healing capacity over external interventions. The term carries very different weight depending on whether you encounter it in a biology classroom or a naturopath’s office.