Scientists have found that the inhabitants of great Britain, France and America have a number of genetic characteristics, laying the gloom in their characters at the genetic level. Experts say about the genetic programming of human nature, so that in these countries people are more difficult to be cheerful.
UK residents have a particular form of a gene that determines the amount of serotonin in the brain. The modified short form of the gene have the French, says The Daily Express.
Note, citizens of the Netherlands and Denmark complain of a bad mood is much less. In the genetic analysis failed to install, the structure of the gene of happiness" they have somewhat different from the genes of Americans, French and British, writes Professor Andre Oswald (University of Warwick).