Numerous clinical studies have shown that in the human body, used cells are replaced with new ones at a certain frequency. The most important of them is the process of blood renewal, during which the body is cleansed of old cells and toxins, and new ones receive the necessary amount of nutrients and oxygen.
Most doctors believe that this process takes different times depending on the individual characteristics of the body and age. But it has been proven that in the fair sex, renewal occurs a little faster than in men.
Many people wonder why blood is renewed in the body and what factors influence the rate of hematopoiesis. This will be discussed below.
What does science say about conceiving a boy?
To understand how to properly conceive a boy, you need to know the principle of gender formation during egg fertilization. A new person receives half his DNA from his father and half from his mother. Moreover, as is known, women are carriers of the XX chromosome set, and men are carriers of XY. The future sex of the child depends on which father's chromosome is transferred by the sperm that fertilizes the egg. If the sperm carries the Y chromosome, a boy will be born[1].
Pregnancy with your son is the result of many factors coming together, so try not to put too much faith in advice on how to conceive a boy. Today, only the IVF procedure can accurately guarantee the birth of a child of the desired sex, but the selection of an embryo by sex in Russia is carried out only according to indications - in order to exclude any hereditary disease transmitted through the female or male line[2].
How to speed up the natural replacement process
When the body loses a significant amount of fluid, hematopoiesis starts regardless of the cycle. Therefore, many medical organizations declare the benefits of donation as a way to improve the health of the body - with frequent donation of biomaterial (every 4 weeks), recovery mechanisms are launched, and, being renewed, the blood acquires new young cells. It is no coincidence that in the old days many diseases were treated with bloodletting.
The plasmapheresis procedure effectively starts the process of hematopoiesis. During this procedure, the required volume of biomaterial is taken from the patient, then it is divided into components: plasma (liquid base) and formed elements (red blood cells, platelets, leukocytes). The liquid connective tissue cells are returned unchanged, and the plasma is either disposed of or used for medical purposes. The method is quite safe and approved by the Ministry of Health of the Russian Federation.
The younger the blood, the younger the body, says Jesse Karmazin, founder of the American startup Ambrosia Medical. He was one of the first to provide services for the rejuvenation of this biofluid. During this procedure, the patient is transfused with plasma from a younger donor, which should give strength to the body and several additional years of beautiful youth.
Attention ! The effectiveness and safety of this method of rejuvenation has not been officially confirmed.
How to conceive a boy by ovulation?
There is a calendar method, which is based on the scientific fact that Y-sperm are less tenacious, but more active than X-sperm. According to this method, the ideal time to conceive a son is the day of ovulation and the day preceding it.
A woman thinking about how to conceive a boy will need an ovulation chart. To do this, you can measure basal temperature every day, use pharmacy ovulation tests, or monitor follicles using ultrasound. You can also navigate by the discharge, which becomes more viscous and white during ovulation.
It is worth noting that the studies that discovered the increased activity and shorter lifespan of Y-sperm were carried out in vitro (“in vitro”), and are now being questioned by some scientists[3], so do not expect a 100% guaranteed result.
Exceptions in theory
For women with a negative Rh factor, the principle of operation of the theory changes exactly the opposite. In this case, the sex of the child is determined by the parent whose blood is “older” (whose remainder after dividing age by the decimal update rate will be greater). There is an opinion that this exception applies in the case of a negative Rh factor in a man, but it has not been confirmed.
When the body loses a significant amount of fluid, the timing of its renewal changes. In cases of heavy blood loss, the starting point of the renewal cycle will change - it will begin not from the date of birth, but from the moment of this event. Such cases include:
- surgery;
- donation;
- childbirth (bleeding after childbirth);
- abortion;
- miscarriage;
- injuries.
When to conceive a boy in 2021 according to blood renewal cycles?
According to the blood renewal theory, men's blood is renewed every 4 years, and women's blood is renewed every three years. A boy is more likely to be born to the couple in which the father was the last to renew his blood. First, you need to calculate who currently has “younger” blood. The count is carried out either from birth or from large blood losses (after operations, injuries, childbirth or abortions).
- We divide the father's full age by four (for example, if he is 29 years old: 29:4 = 7, remainder 1).
- We divide the mother's full age by three (for example, if she is 26 years old: 26:3 = 8, remainder 2).
- Let's compare the balances. In a man, the blood was renewed only a year ago (remainder 1), and in a woman - 2 years ago (remainder 2). Based on this theory, one can expect the birth of a boy during this period, since the blood of the future father is “younger.”
How blood is renewed
This issue is still being studied by scientists, its detailed features are being considered . The theory is still being tested through research. The blood renewal table, taking into account some features, is still being compiled by scientists.
Blood consists of cells that perform different functions:
- Red blood cells.
- Leukocytes.
- Platelets.
Red blood cells are the most common blood cells
They do not have a nucleus, but they contain the protein hemoglobin, which contains an iron atom.
Thanks to this, an oxygen molecule is attached to the red blood cell. The amount of oxygen changes after it is released to the cells. These cells enter the blood from the bone marrow.
What you need to know about them:
- They replace dead red blood cells.
- They live 120 days.
- There are most of these cells in human blood. They deliver oxygen to every organ.
- The process of death of such cells occurs in the liver, spleen, but can also occur in blood vessels.
Leukocytes protection against viruses and infections
There are much fewer leukocytes than red blood cells. They perform a protective function: they prevent viruses and pathogenic bacteria from entering the body.
How the immune system works
There are several types of leukocytes:
- Eosinophils. Protects the respiratory system, urinary tract and intestines.
- Neutrophils. Ensure proper functioning of the immune system.
- Monocytes. They function to eliminate inflammatory foci.
- Basophils. Eliminate allergic and inflammatory reactions in the body.
- Lymphocytes. Destroy viruses and pathogenic bacteria.
These cells live for about three months, then they die and new ones appear in their place.
Platelets wound healing
These cells are responsible for the integrity of the walls of blood vessels and their rapid restoration in case of damage. If a person is injured, it is these cells that lead to blood clotting. They prevent major blood loss. They originate in the bone marrow and then enter the bloodstream. They live for ten days, after which they die and new ones appear in their place.
Platelet functions
Platelets can have different sizes:
- Microforms – 1.5 microns.
- Standard forms – 3 microns.
- Macroforms – 5 microns.
- Megaloforms – 8-10 microns.
What diet should you follow to conceive a boy?
Some studies have found a connection between nutrition and the gender of children born. Expectant mothers and fathers who want to give birth to a son are advised to eat foods rich in sodium and potassium - meat, sausages, fish (but not other seafood), potatoes, peas, lentils, beans, mushrooms, cherries, bananas, apricots, oranges, peaches, dates, egg whites, rice, semolina, cookies, dark chocolate. In this case, it is better to give up milk, bread, mineral water with calcium, nuts, greens, green beans, cabbage and salt food more than usual.
If the future parents had significant blood loss
In this case, the general cycle of blood renewal is shifted. Every serious blood loss leads to the fact that the body is forced to restore losses in an emergency mode, throwing all its hidden resources at it. In such situations, blood cells of all categories begin to be produced in large quantities, resulting in unscheduled renewal.
For this reason, when determining the sex of a child by blood renewal, it is important to take into account all such points. In this case, it is necessary to count from the date of the event, as a result of which significant blood loss occurred.
What other methods are there to conceive a boy?
They say the following tips may work:
- quit smoking;
- try not to reduce your weight below 55 kilograms;
- give in to your husband - he must be the de facto head of the family;
- don’t worry if you can’t get pregnant for a long time - the longer you don’t succeed, the higher the likelihood that you will have a boy;
- lead a calm, measured lifestyle, avoid stress;
- visualize your future son in every detail.
And finally, a few folk methods to conceive a boy. It’s good if conception occurs in the summer, but it is important that the future father walks the earth barefoot, renewing and strengthening his masculine energy. It is believed that the best time to conceive a son is the morning or afternoon of Monday, Tuesday, Thursday or Saturday.
Update calculation
Many health-conscious people ask their GPs if it is possible to calculate when blood vessel turnover begins.
Keep in mind that each person's recovery cycle is slightly different. Also, the period of hematopoiesis largely depends on the anatomical features and the influence of external factors. If a person is a donor, recovery will be more frequent and faster, this will be an individual trait.
International medicine believes that in men and women the biomaterial is renewed in the following way:
Age and fertility
The ability to conceive in both boys and girls appears during puberty. The beginning of the fertile age of the fair sex will be marked by the onset of ovulation and menstruation. However, over the years, reproductive function undergoes changes. Fertility decreases as the body ages, and after menopause, women can no longer become pregnant naturally.
In modern society, infertility associated with age-related changes in the reproductive system has become increasingly common. There are many reasons why many girls begin to start families only after 30 years. Today women have more opportunities to take care of themselves and monitor their health, but all this does not exclude an age-related decline in reproductive function. It is important to understand that fertility declines as a woman ages due to the natural process of a reduction in the number of eggs in the ovaries. And this process can begin much earlier than most women expect.
OVULATION AND MENSTRUAL CYCLE
During their reproductive years, women experience regular menstrual cycles, during which the process of ovulation occurs monthly. At the beginning of each cycle, follicle-stimulating hormone (FSH), produced in the pituitary gland, stimulates a group of follicles in both ovaries to grow. Usually only one of these follicles matures and releases an egg (ovulates), the rest stop growing and are destroyed. Pregnancy occurs when an egg is fertilized and implants in the lining of the uterus (endometrium). If pregnancy does not occur, the endometrium is released as menstruation and the cycle resumes.
At the beginning of adolescence, girls experience “wandering” ovulation, which leads to irregular menstruation, but by the age of 16, as a rule, a stable periodicity of menstruation is established. From this time on, the female cycle will remain stable, ranging from 26 to 35 days.
Unlike men, whose bodies produce sperm throughout their lives, a woman is born with a constant number of eggs with follicles contained in the ovaries. So, at birth, a girl develops about a million follicles. By puberty, this number is reduced to about 300,000. Of all the remaining follicles, about 300 reach ovulation during reproductive years. The remaining follicles are not used during ovulation, but are used only as they undergo a natural, sequential process of degeneration called atresia.
As women age, fertility declines due to natural age-related changes that occur in the ovaries. From about 30-40 years old, you can notice that the cycle has become shorter. Over time, ovulation begins to disappear, periods become increasingly rare until they stop completely. It is believed that the stage of menopause occurs when a woman does not menstruate for a year. It is believed that women who like to smoke a cigarette or two experience menopause a year earlier than non-smoking women.
FERTILITY IN AGING WOMEN
The best reproductive years for women are considered to be 20-30 years of age. Fertility gradually begins to decline by the age of 30, and this trend is especially pronounced after 35 years. Each month, a healthy woman of childbearing age has a 20% chance of becoming pregnant. That is, for every hundred childbearing 30-year-old women who try to get pregnant on the first try, only 20 will succeed, the remaining 80 will have to try their luck again. By age 40, this probability is less than 5%. Thus, less than 5 out of 100 women can successfully conceive in any given month.
As we said, women remain fertile until menopause, the average age of which is 51 years. However, most women fail to conceive a child at the age of forty. These indicators apply to both those who are trying to get pregnant the traditional way and those who are undergoing infertility treatment, including in vitro fertilization (IVF). Stories broadcast in the media can lead women and their partners to the mistaken idea that no matter what, they can be guaranteed to become pregnant using procedures such as IVF. But we should not forget that a woman’s age still affects the likelihood of a cure for infertility. The quality and quantity of eggs gradually decrease with age, which causes a decline in female fertility.
FERTILITY IN AGING MEN
Unlike the early decline in fertility that is observed in women, in men the change in reproductive function occurs much later. Although sperm quality declines somewhat as a man ages, this is generally not a problem until a man reaches 60 years of age. Although problems in men are not as sudden and noticeable as in women, changes in reproductive and sexual functioning also occur as they age.
Moreover, in the stronger sex there is no age limit at which a man cannot become a father, as proven by gentlemen of 60-70 years of age who managed to successfully conceive offspring with their younger partners. However, as men age, testicles tend to become smaller and softer, sperm structure changes, and sperm motility tends to slow down. Aging men often develop diseases that can adversely affect their reproductive and sexual functions. Moreover, with age there is a higher risk of gene defects in sperm. However, it is worth noting that not all men experience significant changes in reproductive or sexual function as they age, especially not men who have maintained good health for many years.
In any case, if a man has problems with sexual desire or erection, he needs to seek treatment from a urologist. Decreased libido may also be associated with low testosterone levels.
EGG QUALITY
As women age, they become less likely to get pregnant and more likely to miscarry as the quality of the eggs decreases as the number of remaining eggs decreases in number. Such changes are most pronounced in women closer to forty years of age. For this reason, a woman's age is the most accurate test of egg quality.
Important changes in the quality of eggs associated with the presence of hereditary abnormalities and the frequency of past diseases are called aneuploidy (the content of too many or too few chromosomes in the egg). During reproduction, a normal egg should consist of 23 chromosomes, then in total the embryo will contain 46 chromosomes. As we age, more and more eggs have either too many or too few chromosomes. This means that the number of chromosomes in the embryo will also be either more or less than the required value. Most people know that Down Syndrome is a process that results in the embryo having an extra chromosome. However, most embryos with too many or too few chromosomes do not result in pregnancy or result in miscarriage. This situation explains the lower chance of getting pregnant and the higher chance of miscarriage in adult women.
NUMBER OF EGGS
A decrease in the number of follicles containing eggs in the ovaries is called “loss of ovarian reserve.” Women begin to lose ovarian reserves before they become infertile and before they stop having regular periods. Since women are born with the same set of follicles that they will have throughout their lives, the number of waiting follicles is gradually depleted. As ovarian reserves dwindle, the follicles become less and less receptive to IVF and require more and more stimulation of the egg to mature and ovulate. At first, periods may move closer together, resulting in shorter cycles of 21 to 25 days each. As a result, the follicles become unable to function properly for stable ovulation, leading to long, irregular cycles. Declining ovarian reserve is usually associated with age and occurs due to the natural loss of eggs and deterioration in the quality of the remaining eggs. However, ovarian reserve may also decrease in younger women. This often occurs due to smoking, a hereditary predisposition to premature menopause, and previous ovarian surgery.
INFERTILITY AND AGED MOTHERHOOD
Infertility is diagnosed if a woman fails to become pregnant after a year of unprotected sexual relations (including without the use of oral contraceptive methods). However, if the woman is 35+, the examination should be carried out after 6 months of unsuccessful attempts to conceive a child. If couples have obvious medical problems that affect their inability to conceive, such as absence of periods (amenorrhea), sexual dysfunction, inflammatory diseases, or previous surgery, they are advised to begin infertility evaluation immediately.
A fertility test usually involves determining your ovulation period, examining the fallopian tubes, cervix, and uterus itself. The male partner will need to undergo a spermogram (sperm analysis). Most tests can be completed within one month. After the examination is completed, the necessary treatment is prescribed. It is very important to monitor your overall health. A preliminary consultation with a specialist often also gives a positive result. Doctors may suggest a course of necessary therapy before pregnancy begins, as there are increased risks for older women.
For example, women who have medical conditions such as high blood pressure or diabetes should consult their doctor before trying to conceive, as symptoms of these conditions may worsen during pregnancy. Additionally, children born to women after age 35 have a higher risk of being born with the wrong number of chromosomes. Therefore, women at risk during pregnancy may be recommended to undergo a special examination.
It is better for women to discuss the existing risks with their doctor or genetic counselor before planning a pregnancy. The screening may include prenatal testing after specific screening for certain congenital anomalies. Currently, amniocentesis and chorionic villus biopsy are used to identify pathologies. Blood tests and ultrasound are also used as diagnostic tests. As practice shows, most parents want to find out as much information as possible about pregnancy in order to be able to make an informed decision.
TREATMENT OPTIONS AND ALTERNATIVES
Assisted reproductive technologies
When determining the cause of infertility, doctors may suggest special treatment. However, sometimes there are cases in which no specific problem can be found and the cause of infertility is considered “unknown”. For undiagnosed infertility, or when traditional treatments have not worked, assisted reproductive technologies, such as superovulation using intrauterine insemination (IUI) technology and in vitro fertilization (IVF), can be used. In the IUI cycle, infertility treatment is carried out using drugs to increase the number of eggs in the ovaries. When these eggs are ready to ovulate, the partner's selected sperm is placed directly into the woman's ovaries. This procedure is called intrauterine insemination (IUI) technology and does not cause any discomfort. IVF is the procedure of retrieving an egg and fertilizing it with the partner's sperm in the laboratory, then the finished embryo is placed in the uterus. In each of these procedures, sperm from a donor may be used instead of the sperm of the woman's partner.
With any of the treatment options, the woman’s age directly affects the onset of pregnancy. Among women over 40 years of age, the likelihood of successful intrauterine insemination is less than 5% per cycle. In comparison, the success rate for women aged 35 to 40 is approximately 10%. IVF is considered a more productive technology, but the success rate among women 40+ is relatively low, only 20% per cycle.
Egg donation
If other treatments have failed, the woman is over 42 years of age, or suffers from Ovarian Failure Syndrome (Premature Ovarian Failure), also known as early menopause, treatment options are narrowed. In this case, egg donation, which is the use of eggs from female donors aged 20-30 years, is considered a fairly successful procedure. The high likelihood of becoming pregnant with a donor egg confirms that age-related egg quality is the primary barrier to conception in older women. If you are over 40, then the likelihood of successfully becoming pregnant using an IVF cycle using a donor egg is much higher, but many couples or single women around forty years of age prefer to use their own eggs, although the likelihood of getting pregnant in this case is lower. By the age of 43, the chance of becoming pregnant through IVF is less than 5%, and by the age of 45, the only reasonable rational alternative is the use of a donor egg.
In this treatment, the egg donor takes drugs to stimulate the production of many eggs in the ovaries. At the same time, the egg recipient (the woman who receives the donor egg) receives hormone therapy to prepare her ovaries to receive fertilized eggs (embryos). After receiving the eggs from the donor, they are fertilized with the partner's sperm in the laboratory. A few days after this, the embryos are placed in the recipient's uterus. Any of the embryos that are not used can be frozen (cryopreserved) for later use.
IVF egg donor gives women the opportunity to become pregnant, give birth and experience the joy of motherhood. However, one must understand that a child conceived in this way will not be genetically related to the woman who gave birth to him. At the same time, he will have a biological connection with the father and the egg donor. Many programs recommend counseling to ensure that all parties to the egg donation agreement understand the ethical, legal, psychological and social aspects of the issue. Since the success of the procedure is highly dependent on the quality of the donor's eggs, ideal donors are women between the ages of 20 and 30 with proven fertility.
DELAYED MATERNITY
Women who want to delay childbearing until after age 38 may consider methods such as embryo freezing after IVF or egg retrieval and freezing for later use. The success of embryo freezing (crypoconservation) is well known, but it requires the woman to have a male partner or to use donor sperm. Egg freezing to delay motherhood is a promising new technology. However, there is a problem with using voluntary egg freezing. As a woman gets older, the end result of her assisted reproductive technology cycle is less and less successful.
PRE-IMPLANTATION GENETIC SCREENING
New technologies are currently being developed that will allow embryos to be tested for chromosomal abnormalities. This method is applied to embryos created using IVF. It may be especially useful for older women. In preimplantation genetic diagnosis (PGD), a small number of cells are taken from each embryo and tested. Chromosomally correct embryos are selected for transplantation into the mother's uterus. It is expected that this procedure will lead to a high rate of pregnancy and transfer of embryos with genetic abnormalities.
CONCLUSION
Fertility naturally declines as you age. Despite the fact that the timing of the decline in fertility and the onset of menopause in women varies significantly, this period occurs in the life of every representative of the fair sex. Typically, fertility begins to decline around age 30 and declines noticeably at age 35. Women who decide to delay pregnancy until age 35 or later should be realistic about their chances of success and have information about their options for conceiving and, if necessary, using fertility treatment. By reviewing all the options and understanding her needs and goals, a woman and her partner can make the best decision.
List of useful products
Many experts advise future parents to improve the quality of their blood before a planned conception, for which they should follow a certain diet, giving up junk and heavy foods and enriching their diet with healthy foods, in particular, you should add to the daily menu:
- Fresh beets and carrots , eating them raw or in juice form.
- Fresh garlic . Doctors recommend swallowing a clove of garlic every day before going to bed. In this case, all processes of hematopoiesis are significantly accelerated in the body.
- Fish of marine varieties , since almost any of them contains omega-3 fatty acids, which contribute to the qualitative improvement of the blood, its purification and the removal of cholesterol from it.
- White cabbage . It should be consumed fresh, without subjecting it to any heat treatment, as in this case it loses all valuable substances. It is best consumed as part of fresh vegetable salads.
- Fresh apples of different varieties , best of all those that grew on your own plot, since they will not contain any chemicals, which cannot be said with certainty about a store-bought product. When choosing apples in a store, you should give preference to the most inconspicuous fruits that have a natural color and appearance.
- Pomegranate seeds , as they also contain a huge amount of vitamins, many of which are necessary to improve hematopoietic processes.
- A variety of nuts , especially walnuts and hazelnuts. Nuts contain a significant amount of potassium, magnesium and iron, as well as many vitamins and therefore can influence renewal processes.
How quickly does sperm recover completely?
For complete recovery of sperm, it takes from 68 to 78 days, that is, approximately 2.5 months. Of these, from 56 to 64 days are required for the transformation of spermatogonia into sperm, and another 12 to 14 days for sperm to mature in the seminal appendages. This means that if a man has been exposed to factors that negatively affect spermatogenesis (taking antibiotics, overheating, etc.), then conception should be planned no earlier than 3 months after their elimination.
Also, when planning conception, it is important to understand how much sperm is restored after sexual intercourse. After ejaculation, new sperm mature and emerge from the epididymis within 72 hours (3 days). Therefore, the optimal frequency of sex for a couple who is trying to conceive a child is 2 times a week. Otherwise, immature sperm will end up in the sperm, which have little chance of fertilizing the egg.
If the Rh factor is negative
If a woman has a negative Rh factor, then in this case the calculations change somewhat, since older blood will be dominant in such a situation. It is she who will determine the gender of the unborn baby.
Considering the above example of calculations for negative Rh blood, we can conclude that the couple will have a boy, since the remainder 75 is greater than 3. With negative Rh, the sex of the baby is determined by the largest remainder of the values obtained in the calculations.
Some experts claim that the Rh blood of not only women, but also men is important. And if the father of the unborn child is Rh negative, then the calculations also change and the oldest blood at the time of conception becomes dominant. But there is no scientific confirmation of this.
Determining the sex of the fetus
Posted at 17:09h in Services by doctor
Do you want to try to conceive a boy or a girl? Or are you already pregnant, but can’t wait for the second screening (22-26 weeks), at which you can definitely “see” your gender?
All the main methods of planning the sex of an unborn child, as well as some methods of determining sex without ultrasound in the early stages of pregnancy are collected on this site.
“The main thing is to be healthy” - most often, future parents and grandparents say exactly this. But there are times when the birth of a child of a certain gender is important. For example, when there is a hereditary (genetic) disease associated with gender in the family.
So, there are several most popular ways to calculate the gender of an unborn child. And also various numerological calculations, “signs” in which expectant mothers look for confirmation of their assumptions and desires.
