Most people are unaware of the benefits of kissing, which can reduce the risk of fetal disease

Kissing is a type of "quality control" developed during human evolution for the next generation. British scholars have recently discovered that microbial transmission through kissing is not necessarily harmful without any benefits. Women can acquire an immunity through kissing, reducing the risk of fetal disease during future pregnancy.

Latent virus

As health experts warn, kissing is indeed a way for bacteria and viruses to spread between people. Researchers have found that among the many viruses that may be transmitted through kissing, there is a type called "cytomegalovirus". This virus usually "lurks" in saliva and does not cause any harm.

However, if a woman is infected with this virus during pregnancy, it can have adverse effects on the fetus in the womb, such as causing congenital defects such as deafness or cerebral palsy in newborns, and even causing stillbirth. The most effective way for women to gain immunity to cytomegalovirus is through saliva exchange during kissing, according to British researchers.

Acquire immunity

Kissing the same man for 6 months can provide women with the best immune response to cytomegalovirus.

The first kiss between a man and a woman is often "point to stop". As only a small amount of cytomegalovirus is transmitted from the man to the woman, it not only does not cause harm to the woman, but also produces antibodies against the virus in her body like vaccination. As the relationship between the two becomes increasingly intimate, the 'scale' of their kissing will increase, and the number of viruses transmitted through kissing will also increase.

Women are constantly building a strong defense against this virus. Finally, when their love finally "matured" and the woman became pregnant, her body's antibodies were already sufficient to resist the invasion of the cytomegalovirus. Therefore, the probability of the fetus being infected with the virus in her abdomen will be greatly reduced.

Not 'romantic'

People generally view kissing as a romantic pleasure for two people in a passionate relationship, but scientists' explanations greatly diminish this "romantic" feeling. In the past, scholars have pointed out that kissing is a type of "quality control" developed in human evolution for the next generation: people use kissing to "decode" various information from each other's saliva, such as reproductive ability, health status, and genetic quality. Although this viewpoint is supported by some experts, there are also experts who do not believe so.

Other experts suggest that people only need to have intimate physical contact to learn a range of physical information about each other, such as body odor, fertility, health status, physical and oral hygiene, etc. The small amount of additional information brought by kissing is not a driving force for human evolution.