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Some things are just gross. From oozing, infected wounds to rotting food, there are sights and smells that elicit sheer revulsion. But disgust isn't just for the delight of middle school boys; it actually serves an important purpose. Researchers have long known that disgust helped our ancestors avoid things that could cause infection. But a new study finds that there are six common categories that trigger disgust and they are based on the people, practices and objects that pose the risk of disease. For the study, led by the London School of Hygiene & Tropical Medicine, researchers surveyed more than 2,500 people online, listing 75 potentially "disgusting" scenarios they might encounter. The situations ran the gross gamut from people with very obvious signs of infection to objects covered with insects to the sound of sneezing. People were asked to rate their disgust response on a scale ranging from "no disgust" to "extreme disgust." In not terribly surprising news: Of all the icky scenarios, the one that garnered the most disgust was an infected, pus-filled wound. People who had extremely bad hygiene — such as bad body odor — were also found to be particularly repulsive. The most disgusting things Researchers analyzed responses to identify the most common categories of disgust. Here are the categories and some examples, if you have the stomach for them. - Poor hygiene — body odor, listening to someone sniffle and snort, an unflushed toilet, watching someone pick their nose - Animals — raw chicken, slugs, worms, cockroaches, teeming insects - Risky sexual behavior — prostitution, promiscuity - Atypical appearance — disfiguration, irregular body shape, illness, poverty - Skin conditions — lesions or boils - Food that is rotting or spoiled Each category relates to types of infectious disease threats in our past. For example, the researchers point out that eating rotten food could have led to diseases like cholera, contact with open wounds could have increased the risk of smallpox infections, contact with unhygienic people could have helped transmit leprosy and risky sexual behavior could have increased the chance of an infection such as syphilis. Our innate disgust response, therefore, keeps us healthy. The disgust difference There are some things that disgust women more than men. (Photo: WAYHOME studio/Shutterstock) The study, which was published in Philosophical Transactions of the Royal Society B, found some gender differences. Perhaps not so surprising, women rated every category more disgusting than men. The researchers point out that this is consistent with knowledge that men, in general, are known to engage in riskier behavior. “Although we only really came to understand how diseases transmit in the 19th century, it’s clear from these results that people have an intuitive sense of what to avoid in their environment," Micheal de Barra, who co-led the research, said in a statement. "Our long co-evolution with disease has 'wired in' this intuitive sense of what can cause infection.”
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Postoje jaki dokazi kako je seks dobar za mozak, imunitet, raspoloženje, a čin ljubljenja nam može pomoći u tome da razlučimo ko je biološki kompatibilan s nama. Ali ipak, ako mislite da seks može biti malo gadnjikav, niste sami. Zapravo, svi smo vjerovatno evoluirali da osjećamo određeni nivo gađenja prema seksualnom ponašanju, tvrdi nova studija koju je sprovela London School of Hygiene & Tropical Medicine. Istraživanje je objavljeno u časopisu Philosophical Transactions of the Royal Society te otkriva kako postoji šest različitih vrsta gađenja, a žene ih mogu osjećati više nego muškarci, piše Business Insider. Naučnici su ispitali više od 2500 ljudi tako da su im dali 74 potencijalno odvratna scenarija. Na primjer: vidjeti nekoga s očitom infekcijom; čuti kijanje i tjelesne funkcije… Zatim su zamolili ispitanike da ocijene koliko su zgađeni na skali od ‘ne gadi mi se’ do ‘ekstremno sam zgađen’. Ustanovili su šest kategorija u gadljivosti, a one su: atipičan izgled, povrede, seks, higijena, hrana, životinje. Inficirane rane ljudi smatraju najodvratnijim od svih scenarija, a za njim slijedi neispunjavanje higijenskih normi, poput tjelesnog smrada. Već su odavno naučnici prepoznali da je gađenje emocija koja se razvila kako bi nam pomogla da izbjegnemo infekciju, ali novo istraživanje sugeriše kako se ono odnosi i na društvene norme. Na primjer, trula hrana može dovesti do bolesti poput kolere, a kontakt s neopranim i nehigijenskim ljudima mogao je raširiti gubu. Otvorene rane mogle su prenijeti kugu ili velike boginje. A seks je donosio opasnost od infekcija poput sifilisa ili gonoreje. Koje su problem i danas. “Znali smo da je osjećaj gađenja dobar za nas, mogli smo na tome temeljiti kako bi pokazali da je gađenje strukturirano prepoznavanje i reagovanje na infekciju kako bi nas zaštitilo. Ovakav tip ponašanja izbjegavanja bolesti očit je kod životinja, zbog toga vjerujemo da je evolucijski vrlo davan”, kazao je Val Curtis jedan od autora studije. Naučnici su otkrili da su žene svaku kategoriju označile s više gađenja nego muškarci. Što su istraživači protumačili tako da se muškarci obično rizičnije ponašaju. Ženama koje su učestvovale u istraživanju najodvratnija su bila rizična seksualna ponašanja i životinje. “Iako smo tek u 19. vijeku shvatili kako se bolesti prenose, iz ovih rezultata jasno je da ljudi imaju intuitivan osjećaj što da izbjegavaju u svojoj okolini”, kazao je profesor psihologije Michael de Barra sa Univerziteta Brunel u Londonu koji je pomogao u vođenju istraživanja. “Naš dug suživot s bolestima istančao je taj intuitivni osjećaj što nam sve može uzrokovati infekciju”, dodao je on. Izvor: 100naj.com