Medical students have much to gain by understanding how evolutionary principles affect human health and disease. Many theoretical and experimental studies have applied lessons from evolutionary biology to issues of critical importance to medical science. A firm grasp of evolution and natural selection is required to understand why the human body remains vulnerable to many diseases. Although we often integrate evolutionary concepts when we teach medical students and residents, the vast majority of medical students never receive any instruction on evolution. As a result, many trainees lack the tools to understand key advances and miss valuable opportunities for education and research. Here, we outline some of the evolutionary principles that we wished we had learned during our medical training.Keywords Medical education . Evolution . Natural selection . Phylogeny . Virulence . Host defenses . Tradeoffs . Ultimate causation
Evolution and Medical EducationMedical students must learn an ever-increasing volume of information in medical school. Many worthy topics, including prevention, public health, clinical reasoning, ethics, health policy, communication skills, and professionalism, now compete with the traditional core biomedical sciences, such as biochemistry, genetics, and pathophysiology. It is no wonder then that any effort to introduce another science-evolutionary biology-into the medical curriculum is a difficult endeavor.In a 2003 survey of North American medical school deans, 48% said understanding the concepts of evolution is important for physicians. However, not a single medical school taught evolutionary biology as a basic science, no medical school required evolution as a prerequisite for admission, only 16% had Ph.D. faculty in evolutionary biology, and schools devoted a median of only four hours of curricular time on core topics in evolution (Nesse and Schiffman 2003). Complicating matters further, one of ten medical students in Glasgow rejected the notion of long-term evolution on religious grounds (Downie 2004). Thus, more than 15 years after the publication of the seminal text, Why We Get Sick: The New Science of Darwinian Medicine (Nesse and Williams 1994), many physicians remain unaware of evolution's most relevant principles.Evolutionary (Darwinian) medicine is the application of evolutionary principles, including natural selection, adaptation, phylogenetics, and evolutionary constraints, to understanding health and disease. In this paper, we argue that a working knowledge of evolution is well worth the time and effort by students of medicine. We review selected concepts in evolutionary medicine that we wish we had learned when we were in medical school. This missed educational opportunity would teach students to ask evolutionary "why" questions of diseases and develop skills to recognize evolutionary paradoxes and patterns in medicine. As we describe, evolutionary biology is an integrative science whose concepts can help students and professionals improve learning, teaching, practice, ...