It turns out that a healthy immune system is worthwhile not only because of health, but also because of love.
A new study published on Wednesday in a British journal may show that the human brain considers people with immune systems to have better looks.
"There's nothing special or beautiful inside that we consider fun, so the theoretical rationale is that for thousands of years of evolution we have attributed certain traits to beauty, as a sort of reward for choosing our spouse," said Summer Mangalkoch at Texas Christian University.
That is, the human brain selects a "immune" spouse so that it can reproduce and not become extinct.
The study involved 79 women and 80 men.
The researchers photographed them from the neck up in a "neutral" position and also sampled their blood.
Subsequently, about 500 volunteers were asked to rate the subjects' faces based on the photographs and cross-referenced the "scores" with the results of the blood tests.
According to the researchers, it can be seen that in many cases the rating and level of immune system obtained in the blood were matched - that is, faces that were rated more beautiful were usually also faces of a man or woman with a better immune system.
The way the level of a person's immune system was determined was according to the level of phagocytosis in the blood - that is, the strength of the mechanism in the blood that can fight bacteria and viruses.
In addition, men in whose blood were found more natural killer cells - cells that know how to attack cancer cells or with a virus - were considered more attractive among women.
Everything you need for winter on sale
The matzah was reversed in women: women whose blood had a low level of natural killing cells were more attractive to men.
This can be explained by the fact that women with fewer natural killing cells tend to be more fertile and with fewer involuntary abortions, and with more estrogen.
Evolution may have taught the male brain to recognize this by facial features.
However, the researcher clarifies that it is still unclear whether we define a person as attractive or attractive because of something specific in the face or because of the totality of facial features and their characteristics.
Were we wrong?
Fixed!
If you found an error in the article, we'll be happy for you to share it with us