How the Black Death caused Europe to become obsessed with the act of sneezing for centuries
Hebrew tradition tells that, just before biting the apple, Adam sneezed. At that moment it seems that he didn’t care much, but after the incident with the fifth piece of fruit a day he ended up interpreting it as “a sign of evil and a harbinger of death.” The noise stayed there, of course, and when the very old Jacob was worried about not getting to see his son, he begged God to change the natural order of things lest a bad sneeze take him to the other neighborhood. That’s where it comes from (collected or perhaps invented anew by medieval tradition) that we desire “health” in Spain, “saúde” in Portugal or “Gesundheit” in Germany to someone who has just sneezed. As if to ward off bad omens; that life is not enough to play with dice. However, because it is common, I still find it surprising how much a simple sneeze has come to mean. Aristotle, explains García-Morenowas convinced that, compared to flatus or belching, the sneeze was the only one that had a ‘sacred nature’ because it came “from the main and deepest and most divine of the organs, the one that contains the spirit.” Hippocrates, on the other hand, although he did not decide on the goodness or badness of sneezing, he did describe the principle of reciprocal inhibition by pointing out that sneezing was, mind you, the best remedy for hiccups. As I said, the history of sneezing in the West cannot be understood in all its complexity without the Black Death. It was then that the “health” of the Jewish tradition or the “Jesus” of the Christian tradition became popular again as a way of wishing that this ‘achís’ was not the doorway of the damned plague. The “God bless you” that still resonates in English formulas (‘bless you’) comes, it seems, from one of the many plagues that struck medieval papal Rome. In contrast, in many other places, sneezing was considered a good thing. Fantastic. Traditional Hindu medicine used to provoke it as a way to balance internal humors and treat illnesses while the more archaic African medicine used it protopsychiatrically as a way to cure mental illness (supposedly caused by the existence of worms in the brain). To finish, to finish at some point, the Aztecs used it for headaches. What is a sneeze really? In reality, a sneeze is something very simple. It is a reflex actionsudden and compulsive, whose purpose is to expel large amounts of air through the nose and (sometimes) also through the mouth. It is, therefore, a physiological reflex that the respiratory system uses defensively. Therefore, it usually occurs when certain foreign particles irritate the nasal mucosa. And yes, I have used “usual” with all the intention in the world. As it seemsand these are average estimates, before each sneeze we inhale about two and a half liters of air. That is the first phase, the inhalation phase. At that moment, the abdominal muscles tense the diaphragm to increase the pressure in the lungs and force the air to come out through the nose at dizzying speed: between 70 and 130 kilometers per hour. The saliva that is usually expelled when sneezing can cover an area of up to 8 square meters. And that is precisely what makes a sneeze one of the worst vectors of disease spread in the world. However, sneezing is most popular precisely when it is most harmless: in spring, summer or autumn. When it is caused by ‘allergic rhinitis’. A classic, indeed. This type of rhinitis, caused by pollen from trees, weeds and grasses, becomes the great recurring character in the lives of practically a third of the population. It is unbearable, unbearable, a cross. But, still, there are worse sneezes. Between 18 and 25% of the population sneezes suddenly when exposed to bright light. This is what is known as ‘photic sneeze‘and it’s an old acquaintance (and a cause of disability) of aviation pilots. Apparently it is hereditary and is produced by an anatomical proximity between the second cranial nerve (the ocular, responsible for carrying visual information to the brain) and the fifth (the trigeminal, which seems to be responsible for sneezing). When there is very bright light, excitation of the optic nerve can cause excitation of the trigeminal nerve. This signal is interpreted as irritation of the mucous membranes and releases a beautiful, annoying and enormous sneeze. Something similar (although this time linked to the medulla oblongata) may be behind people with a natural tendency to sneeze after eating, when they see something pleasant, or even during orgasm. It is already a bad idea, although used well (and even Aristotle would agree with this) it can be seen as a “wonderful” way to improve communication in the bedroom. In Xataka | We have been believing for years that yogurt was the best probiotic. Science is now crowning kefir In Xataka | There are people who sleep four hours a day and are still functional. It’s the closest thing we have to genetic “superheroes” Image | Pexels