Obesity has been shown to decrease the spontaneous fertility of a couple by alteration of the male factor, that is to say, of the seminal quality and also by alteration of the ovarian function.
In addition, gestation rates after assisted reproduction treatments are also reduced when this factor (obesity) is present.
It is probably the female factor that is most intensely affected by a high BMI, since alterations are induced in the ovarian cycle leading to ovulatory dysfunctions and, in addition, a greater number of spontaneous abortions.
Although there is no standardised criterion, it is considered that a BMI in women equal to or greater than 30 may interfere with getting pregnant.
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