French scientists made a sensational discovery – it turns out that men should start thinking about family line continuation long before 40 years. It is better to solve this sensitive issue before 35 years old, because over 35 years quality of sperm lowers dramatically and this results in disastrous effects.
It was considered before that general danger coming from “overmature” men are genetic disorders. Now this point of view is revised. Men achieving 35 years old do not lose their reproductive function but they put at risk their partners because poor sperm may be the cause of female's miscarriage during pregnancy.
According to statistics provided by French National Institute for Health and Medical Research, in women whose partners are older than 35 years, miscarriages occur much often than in women who 's partners are young men. Woman's age has no influence. Specialists came to this conclusion after they analyzed medical cards of 12 thousand couples proceeding with the treatment in a Paris clinic for patients suffering from infertility.
This scientific work actually reverses all methods of treatment of infertility. Lead researcher Stephanie Belloc says that gynecologists who make emphasis on female's age should change their priorities and take into consideration men's age as well. It is considered that a woman should give birth to a child before 35 years old and nobody knew that men also have the same age restrictions.
Source of danger of late fatherhood are genetic deficits accumulating in sperm while male body ages. In young men those defects are insignificant and may be neutralized with processes occurring in ovule. After 35 years DNA damage becomes so evident that natural regeneration mechanisms cannot fight them. “We suppose that exists crucial DNA damage point that cannot be regenerated. When this point is achieved, mistakes in genome are passed to embryo and as a result increases the number of miscarriages”, says Menezo.
Jacques de Mouzon, recearch collaborator, says that ideas that in men reproductive abilities may be maintained up to 90 years old are wrong.
New look at the best age for fatherhood made scientists get worried. It was revealed that modern men and women prefer to delay childbirth, preferring to occupy with carrier.