Dirt in The Ancient Cities Has Strengthened Our Immunity

Crowded living in the walls of ancient cities towns developed immunity to several diseases.

This is the conclusion, scientists from the School of Biological Sciences at Royal Holloway College, University of London (United Kingdom).

Having studied the genetic material of human remains of the oldest cities found in Europe and the Middle East, scientists have concluded that our ancestors lived in these cities in abject, according to our standards, unsanitary conditions.

However, we can not help unscrupulous ancestors are not extinct, and given the opportunity to develop the great ancient civilizations in North and South America, Europe and Asia.

According to scientists the highest level of concentration of bacteria at life in ancient cities, their residents have developed the ability to defend themselves.

The ability of citizens Europeans to survive in the worst epidemics in history (the plague in 1346 -1354 years), shows that they have the genetic level, there was protection from mass diseases.