Natural Health News – When you have a fever, stuffed nose and headache is spreading fingers foot, your body is telling you to stay home in bed.
sick feeling is an evolutionary adaptation holds a recent article.
We tend to assume that infection is what causes the symptoms of the disease, assuming that the only significance of symptoms is alert to the fact that we are in time.
Indeed, many of the systems of our body are involved in being ill: the immune and endocrine systems, as well as our nervous system. Moreover, the behavior we associate with the disease is not limited to humans. What you need to know
“ The symptoms of a cold may be doing more than making you miserable.
“ All living things behave differently when they are sick, usually in search of isolation.
“ Scientists suggest that this need for isolation is hardwired into our genetic code and has an evolutionary purpose -. Helping to ensure that the broader social group stays healthy and survive
Anyone who has a pet knows that animals act differently when they are sick. Some of the most extreme “behavior of the disease” is in social insects such as bees, which often leave the hive to die elsewhere when they are sick. In other words, this behavior seems to have been conserved over millennia of evolution.
The Selfish Gene?
Why this phenomenon persists? According to scientists writing in PLoS Biology symptoms have a meaning beyond the individual level. Rather, they suggest, evolution is operating at the level of “selfish gene”, which ensures that even if the individual organism does not survive the disease, isolating themselves from their social environment (such as staying home when you have a cold) will reduce the overall rate of infection in the group.
“From the point of view of the individual, this behavior may seem too altruistic,” says co-author Dr. Keren Shakhar, Department of Psychology, Faculty of Education Academic Management at the Weizmann Institute, “but from the perspective of the gene, your chances of being transmitted are improved. ”
Symptoms sending a message
Document, scientists go through a list of common symptoms, and everyone seems to support the hypothesis.
Loss of appetite, for example, prevents the spread of disease or food community water resources. Fatigue and weakness can decrease the mobility of the infected person, which reduces the radius of possible infection.
Along with the symptoms, the sick person may become depressed and lose interest in the social and sexual contact, again limiting opportunities to pass their disease to others. Failures in personal grooming and changes in body language say, I am sick! Stay away!
“We know that isolation is the most effective way to stop a communicable disease from spreading form,” he says co-author Prof. individual Shakhar the Department of Immunology at the Weizmann Institute “The problem is that today, for example, flu, many do not realize how deadly it can be. so they go against their natural instincts, take a pill to reduce pain and fever and go to work, where the possibility of infecting others is much more high. “
As the cold and flu season is upon us scientists say they hope their message sinks in: Millions of years of evolution are not wrong. When you feel bad, it is a sign that you need to stay home.