In the case of misunderstood infertility, more attention should be paid to the way couples have intercourse. If a woman does not become pregnant, until now there is often only attention for the frequency of sexual intercourse and the phase of the female cycle in which this occurs. The key to solving a part of misunderstood infertility can lie in studying the sexual behavior of the couples. On September 15, Nils Lambalk asked in his inaugural lecturer for reproductive medicine VUmc to pay attention to this infertility.
If pregnancy does not occur - or does not occur quickly enough - a number of obvious causes of infertility, such as not having ovulation, the absence of sperm or closed fallopian tubes, are looked at. With more than a third of couples, however, the reason for infertility remains hidden. If the chance of spontaneous pregnancy is good, a period of waiting is currently the standard treatment. So far, however, little scientific research has been done into the relationship between sexual behavior and the chance of pregnancy.
Unique research into sexual behavior and infertility
In his inaugural lecture Lambalk announces research into sexual behavior. Lambalk: "The suspicion has long existed that sexual behavior plays a role in uncomprehended infertility. AMC and VUmc will soon start a unique national research subsidized by ZonMw. This study examines whether the chance of pregnancy in couples with misunderstood infertility can be increased by intensive sexual counseling. The participants in the study are divided into two groups, one half being counseling to make the sex more enjoyable and less stressful and the other half receiving no explicit support. The groups are compared after six months. Expectations are that counseling will lead to more pregnancies. "
Coitus more than bringing together seed and egg cells
In addition to this clinical study, fundamental research shows that pregnancy requires more than the collection of sperm and egg cells. For example, the mechanical manipulation of the internal genitals can influence the production of the pituitary hormones that control the ovaries. Experimental research shows that the male semen plasma, the fluid in which the sperm are located, contains hormonal and immunological factors that promote the implantation and growth of an embryo. The semen plasma also contains hormones that promote the release of the previously mentioned pituitary hormones. Lambalk: "It is time that we realize that coitus is not only the method to place sperm cells in the right place, but is probably also a moment when more information is transferred that helps with the onset of pregnancy and its quality. . "