Evolutionary medicine and human health secrets Why is there cancer? Or, more generally, why we get sick? Not “how” – it handles medical research and practice, the molecular mechanisms and physiological discern that underlie health and disease. A more difficult question is “why” people get sick? – Why evolution has structured these mechanisms in a way that makes us vulnerable to disease? Why are diseases, why is there pain, why are mental disorders, why the human body has the power to survive the onslaught of thousands of pathogens, yet falls prey to so many diseases? We are on the playing field – or the battlefield – of a new and fascinating science: Evolutionary medicine or Darwinian medicine, as it is called, which starts from the theory of evolution to understand the concepts of health and disease. This new approach has helped scientists to progress much in understanding such phenomena as the development of antibiotic resistance, autoimmune diseases, cancer, various psychiatric disorders. In terms of evolution, it is explained by the existence of adaptive structures and mechanisms, developed through natural selection; they remained human composition until today, but out of their original context – for modern human life no longer resembles its ancestors animal – takes today issues that we call pathological. Complicated? A better understand the examples in the article.
Evolutionary medicine and human health secrets
Darwinian Medicine is still a subject little known, frail represented in research, with a small number of followers. But it is one of the most exciting new approaches to medical science – one that digs much deeper, goes to the root of diverse pathologies, trying to unravel the very becoming evolutionary origin of human beings. Without substituting contemporary medical approach, without claiming to be an alternative to conventional medicine, it can provide additional on an actual increase depth of knowledge in the medical field. On the trail of the enrichment of theoretical knowledge, practical benefits arising will come: new recommendations preventive health and new therapies.
Among the supporters of this new vision is: Paul Davies (from Arizona State University) and Charles Lineweaver from the Australian National University, the promoters of a new theory on cancer, evolutionary perspective; Randolph M. Nesse and George C. Williams, authors of one of the few books in the field yet – Why We Get Sick – The New Science of Darwinian Medicine, which appeared in 1996, was one of the first works that explained in detail the new vision of health and disease.
“Why there, in the human body, so lovely designed, thousands of defects and weaknesses that make us vulnerable to disease?” As Nesse and Williams authors begin their first chapter – entitled exciting “mystery illness” – in their book. With a dizzying complex physiology, admirably adapted to cope with a huge number of problems and repunându survived them on foot – from infections to thousands of types of pathogens to fractures or injuries to internal organs – the human body however, numerous vulnerabilities, which is manifested by the many diseases that pose. Hard to understand this paradox, which the authors call “the great mystery of medicine.” And yet, they say, an evolutionary perspective make this mystery in a series of questions that can be answered.
A development strategy: compromise
One of the key is understanding that evolution does not make things perfect – far from it. The human body is a collection of compromises. Many anatomical features amaze us by their apparent perfection – human hands are capable of great things! – While others puzzled by the fact that we seem cool “bad thought” if the machine body had been designed by a designer, but very incompetent one would have thought, for instance, cross-path digestive pharynx the respiratory and afterwards try to repair the stupidity inventing a protective mechanism (apparently a complication in addition) that the airway is closed whenever swallow a morsel, for it to not enter the trachea instead go through the esophagus. (And, as we know, this mechanism fails quite often, as we drown the food.) Can give other examples, all showing that, although not opera “someone” but the result of a natural process of evolution led natural selection, hide the body, however, compromise solutions, expression of evolutionary paths taken means to reconcile each with very different requirements.