Sexual education of schoolboys should begin for some years earlier as now teenagers reach sexual maturity considerably before the coevals living 100 years back, the British scientists which clause is published in Journal of Epidemiology and Community Health believe.

Absence of a due level of knowledge of intimate life among the young people which have reached physiological maturity, inevitably results in growth of number of the venereal diseases unplanned pregnancy, abusing alcohol and drugs, and also displays of teenage aggression, researchers warn.

Now, according to scientists, middle age of puberty among the British teenagers makes 12 years, and break between sexual and social development among them is now great as never.

According to one of authors of the publication of doctor Mark Bellisa, the accelerated puberty of modern children partly speaks the improved feed and sharp decrease of prevalence of some children's infections.

At the same time not less important can appear and the role of some social factors or family circumstances, marks Bellisa. Despite lacking reliable proofs of that children in socially unsuccessful areas develop faster, than their more provided coevals, in these areas such problems as high interest of incomplete families and high birth rate most sharply cost. Doctor Bellis also has specified results of recently published research according to which puberty comes much faster at the girls growing in families where there is no father.

" We can not concern to children XXI of century precisely the same as we concerned to their coevals of 100 years back as they are unlike the predecessors and are on completely other stage of intellectual development ", - has emphasized the scientist.