Choosing the sex of the future child is a cherished dream of any parent. She gave rise to many signs and recommendations. Biorhythm calculations, astrological predictions, special diets, etc. are used. These methods may have a right to exist, but they are not medically sound.
It should be noted that the male fetus is more vulnerable to adverse environmental factors and is more likely to die during pregnancy. If this happens after conception, the pregnancy is not noticed, menstruation occurs on time or with a slight delay.
The solution to the problem of gender selection is of concern not only to parents but also to scientists, primarily to help those families who inherit sexually transmitted diseases: some inherit some girls, others - boys.
According to statistics , young and healthy parents are more likely to give birth to boys (ratio 104 to 106 boys per 100 girls); in older parents - on the contrary. Responsible for who will be born in your family - a boy or a girl - the father. Why? Explain.
As we know from school, the nucleus of a human cell normally contains 46 chromosomes (23 pairs), of which two chromosomes are sex. In men, the sex chromosomes are different: X and Y, in women - the same type (X and X). After the fusion of gametes, the unborn child receives half of the chromosomes from the father and half from the mother. If the sperm with the X chromosome is the first to "reach" the egg, a girl will be born, if the carrier of the Y chromosome is faster - a boy.
Are all equal?
We must remember that sperm are not equal. The difference is that sperm carrying the Y chromosome are smaller and move faster. However, they are not as hardy as sperm with an X chromosome , so they die more often before they reach the egg. Sperm carrying the X chromosome are more viable and can live longer in the fallopian tube, waiting for ovulation.
One of the most popular ways to plan the sex of the unborn child is based on these features . First of all, it is necessary to determine the date of the next ovulation using the temperature method.
Why do you need a basal temperature chart?
BT measurement is the easiest way to determine and predict ovulation. It is measured in the rectum or vagina, the record is kept from the first day of menstruation. Measurements should be taken at the same time, preferably in the morning, without getting out of bed. Enter all the data in the schedule at once. If you have SARS, are taking medication, have had sexual intercourse or have had significant physical activity - note all this in the schedule, as these factors can affect the temperature.
If the BT schedule is correct, it is easy to determine the phases of the menstrual cycle, the presence or absence of ovulation, the duration of the luteal phase. (If the second phase is absent, it may signal low progesterone levels and cause infertility.) Bogolyuby experts recommend measuring basal body temperature for at least three consecutive months to use a BT chart to predict ovulation. To interpret the results, it is better to show a schedule to a gynecologist.
We plan sex
With regular menstruation, it is easy to calculate the day of ovulation. If you dream of a girl, the last sexual intercourse should be no later than 2-3 days before ovulation. If you are planning a boy, it is desirable to abstain from sexual intercourse for a week before ovulation, and the act itself is better to have directly on the day of ovulation. It is better to have only one sexual intercourse during the period when the probability of fertilization is highest. Statistics show that this method is effective in 70 - 80% of cases.
