اللَّوالِب، لا تمنع الحمل منعا قاطعا .. كتاب في سبيل موسوعة علمية .. الدكتور أحمد ذكي

Spirals..

Do not completely prevent pregnancy

This is what two scientists who work together in research on pregnancy and contraception with IUDs, in humans and other species, say
Various animals.

They believe that birth control pills are more reliable than IUDs, and that IUDs, in their best forms that have recently appeared on the market, fail in this prevention in a rate ranging between 2 and 5 percent of the cases in which they are used.

They addressed the issue of prohibition, trying to explain it based on the experiments they conducted on animals, and on observations they observed in women who were prevented, but they have not yet found a convincing explanation.

History has a say about these spirals.

Many people think that it was invented in recent years in the middle of this present century
Apparently it is as old as time. History awakens to its first spread in Europe in the nineteenth century, the last century. The strange thing is that its popularity at that time was not to prevent pregnancy, but to encourage it among those who did not become pregnant. Doctors knew that the uterus has a neck, and that it often happens that the extension of the neck does not align with the extension of the uterus, but rather tends to fold. The neck bends forward, or bends backwards. They thought that its forward folding was more effective in preventing the sperm from entering through the opening in the neck into the uterus, until it meets the female egg.

Therefore, it is necessary to establish this introversion by modifying it by inserting
Something to the uterus from which one end extends across the neck and becomes straight, thus clearing the way for the sperm to enter the uterus.

In the 1970s, it became clear that these IUDs were more effective in preventing pregnancy than in facilitating it. These spirals appear in many forms in the markets.

In 1920, he discovered, by chance, that the ban
It can be created even with a small metal ring or a thread made from the glands of the silkworm, due to its strength and softness.

But in those years, doctors were dissatisfied with contraception by any means, and this was helped by the fact that in some cases severe microbial contamination appeared in the women’s pelvis, doctors took it as a basis in their rejection.

Despite this, a number of doctors continued to use these IUDs until the seventh decade of our century, there was a significant improvement in the appearance of these IUDs related to their good performance.

It also happened during this time that the mood of the doctors changed, and in the overwhelming cry that warned the world of the overcrowding of the Earth's population that was about to return, the doctors returned forcefully to these spirals, researching them and advising them.

The number of women in the world who use it now is estimated at about a few million. What is strange is that this is happening while medicine is still researching these IUDs and how they work in the womb.


(shapes of spirals)