Another advantage of having blue eyes

Preliminary studies suggest discoveries for people with light iris. Color is not just an aesthetic element..













 Paul Newman and Elizabeth Taylor. Who would not want their eyes? Not a week goes by without some publication echoing a survey in which people speaks: we like blue eyes. And while dark looks generate more trust as PLOS One published the interview after a study of the Charles University in Prague, seduction still belongs to the clearest iris. And it is not the only advantage. We may never know if the eyes are the mirror of the soul, but what is becoming known is its ability to reveal many details about the health of each person. In fact, for years scientists track the links between their characteristics and what they show and certain diseases. The last track comes from the hand of Inna Belfer, Center for Pain Research, University of Pittsburgh, USA. The doctor has presented a preliminary study on the 33th Annual Meeting of the American Academy of Pain revealing that Caucasian women with light eyes (blue or green) appear to tolerate pain better than those with brown or hazelnut eyes. Also suffering less anxiety after delivery and lower rates of depression.

The work was conducted with 58 mothers who gave birth at Magee Womens Hospital of UPMC. All received an assessment of pain, mood, sleep and coping behavior before and after delivery. Participants were divided into two groups according to their eye color: 24 in the dark range (brown or hazel) and 34 in the clear (blue or green). The data showed that the first group experienced more pain, more anxiety and a higher rate of sleep disorders. Clear-eyed females faced the process with greater happiness.

The main researcher has acknowledged that "due to the small sample size, we can not obtain conclusive evidence, but note that our study has revealed patterns that require further study. Let's see if there is a link between eye color and clinical pain in the second phase of this trial, both men and women, and in different pain models than just the delivery ". The specialist insists. "There may be certain phenotypes that predict or indicate a person's response to pain stimuli or treatment with analgesics. Human pain is correlated with multiple factors such as gender, age and hair color. Indeed, researchers have found that red hair is associated with increased resistance to anesthetics and also to increased anxiety. "

Dr. Gregory Terman, Department of Anesthesiology and Pain Medicine, University of Washington (EE. UU.), Admits that, once again, studies like this show that each patient is an individual and that their doses of medication must be personalized. "Statistically, we realize that there is much more variability to the experiences of pain according to the particular characteristics of each person, such as hair color, eye color, age, weight, sex ... It is a fact that also occurs in responses to drugs for high blood pressure, "he adds. Thus the hair color can also determine how grief is face. in fact, redheads besides having a whiter and more sensitive skin, feel more physical pain than blondes or brunettes. this is demonstrated by a study published in the Journal of American Dental Association, conducted by scientists from the Institute of Anesthesiology, Kentucky, which determines that these individuals need 19% more analgesic to endure the discomfort than the ones with dark hair.

Motorways of pain

Concepción Pérez, head of the Pain Unit of the University Hospital of the Princess and spokesman for the Spanish Society of Pain, notes: "Although studies such as light eyes are preliminary, both the new trial as those in the Redheads indicate us that there are genetic factores probably related to pain perception. Investigate into this issue could be very useful in the future, because it would help predict which people will need more painkillers. "Dr. Perez continues: "We now know, for example, that genetics plays an important role in defining how an individual will respond to different analgesic drugs. If they have a greater or lesser efficiency or side effects. This is a field that currently has an important development: Pharmacogenetics "It is also known that the brain plays a key role in pain sensitivity. For example, chronic pain alters brain circuits. Its beginning is a warning sign that protects us from harm. If we touched boiling oil and we felt no pain we would end up suffering major burns. The problem happens when pain becomes chronic. This is when a vicious circle begins, where the pain roads become highways " she adds. Enrique Santos Bueso, Neuroophtalmology Unit Hospital Clinico Universitario San Carlos in Madrid, said: "The eyes can also tell a lot about our health Sometimes we find patients who came to the Unit because they believe they have an eye problem to discover that they have the signs of other diseases. "We dissect each case basing in the strange characteristics of their eyes. Because not everyone has the luck to wear some beautiful (and painless) clear eyes ...