Biological clock: men too

Biological clock: men too

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Fertility, sterility ... a women's affair all that? In the light of scientific advances and even to shake up some received ideas, men also have their role to play.

Male fertility is dependent on a biological clock

  • Women come into the world with a definite number of oocytes, whose stock is depleted until menopause marks the end of women's reproductive cycles.
  • If men do not suffer such a fall of the curtain, under the pretext that they continue to make sperm all their lives, it is not for all that their "factory" (the testicles) does not begin to unlock ... Useless to delude themselves, they are also slaves of their biological clock.
  • The quality of sperm is also subject to the weight of aging which leads to a decrease in fertility. In men, from the age of 25, the chances of having a child within six months fall by 2% every year.
  • Work has shown that the older the father, the more difficult the mother, regardless of her age and risk factors, to become pregnant.
  • This same woman sees the probability of miscarriage multiplied by three depending on whether her partner is 25 or 35 years old! In the case of in vitro fertilization, it has been pointed out that the age of the father, aged 40 and over, is likely to be a cause of pregnancy failure.

It takes more than 2 months to make spermatozoa

  • In men, from puberty and this normally until old age, triggers spermatogenesis, the process of making spermatozoa. Two months and a half, just that, is precisely the time it takes for male gametes to get a beauty and finally have the right to be called sperm ...
  • Every day, the "factory" - the testicles - produces several tens of millions of them that will have to go through different stages of successive cell division, transformation and maturation before coming to lodge in the seminal glands.
  • Certain conditions influence their production, in particular the temperature of the testicles, always two to three degrees lower than that of the rest of the body. High fever or excessive exposure to a heat source can compromise manufacturing.
  • Throughout the process, male gametes remain inactive and save themselves. This allows them to survive more than two months in the genital tract and wait for ejaculation. At this crucial moment, they find the essential energy to start their motor that will help them to reach their goal: the oocyte.
  • After this period of two and a half months, in the absence of ejaculation, they will be confronted with a phenomenon of aging and will eventually be destroyed, having completely renounced claiming the title of champion at fertilization.

Frédérique Odasso