Scientists have found out the harm of kisses for humanity

The modern strain of the virus that causes herpes has been discovered for about 5,000 yearsback and the researchers

It has been suggested that its spread may have been caused by the advent of kissing.

International team of researchers tested DNAteeth in hundreds of human remains. Using the reconstructed genomes, the scientists were able to determine that all variations of modern strains of the herpes virus date back to the late Neolithic, early Bronze Age. Scientists were a little surprised by this, because it was assumed that herpes is something that has evolved with humans for a very long time.

Researchers have proposed two theories to explainthe spread of herpes. The first is based on the fact that about 5000 years ago there was a time of great migration from Eurasia to Europe. Second: people started kissing each other.