Researchers from Britain have found out that men after years of family relations lost interest in sex. It was previously thought that this only happens on the seventh year of marriage.
The first year a man fighting for the woman, trying to make her happy, changes himself, trying to seem perfect. Psychologists say, in this period the majority of men do not forget about the other girls because of the high level of testosterone, suppress its action is impossible.
In total the study involved 75 volunteers 18-39. A year after the family life of the average level of testosterone for the group declined by a third. Scientists believe, that the necessary conditions for the development of relations. If high testosterone pushes on treason and aggression, the lower level of the hormone is necessary for the birth of a child and care about him.