Understanding The Female And Male Biological Clock!
The biological clock may refer to:
- Age and female fertility, a decrease of female fertility with advancing maternal age.
- Ageing, biological program that limits the lifespan of an individual.
- Biological rhythms.
- The circadian clock, a molecular mechanism that results in a circadian rhythm in a living organism
- Circadian rhythm, a biological process that displays an oscillation about 24 hours, such as the human sleep-wake cycle (the “body clock”).
- Epigenetic clock, a set of DNA sites whose methylation levels can be used to measure aging throughout the body.
- Molecular clock, a technique that uses the mutation rate of a biomolecule to deduce the time in prehistory when two life forms diverged.
- Vernalisation, the induction of flowering by prolonged exposure to low temperatures, as during the winter in a temperate climate.
- Menstrual cycle, the regular natural change that occurs in the female reproductive system that makes pregnancy possible.
1. Female Biological Clock:
A woman’s biological clock begins as they age, but what might be intriguing is it begins ticking around her late 20’s, not her mid 30’s. You see unlike men, females are born with a finite number of eggs, approximately one million.
Then at adolescence, that quantity has astonishingly dwindled to roughly 400,000, and thus each month approximately 750 eggs are expended.
Regretfully not only do some of these eggs start to decline in quantity but in quality additionally. These elements combined result in a woman’s fertility starting to recede in her 20’s and also considerably following age 35.
Here are some important statistics:
I. Fertility rate: Out of one hundred healthy couple:
- 1) Only 25% of unprotected sexual intercourse achieves pregnancy during the first menstrual cycle.
- 2) There are 20% more for each month afterward ( from the 2nd- 11th month).
- 3) At 12 months, the rate of conception decreases to 8%.
“For those couples can not conceive after the 12th months, they are considered as infertility couple”
Below is,
A table containing estimates of the percentage of women who, if starting to conceive at a certain age, will fail to obtain a live birth. Note that while for the young ages researchers tend to agree, for older ages there is a discrepancy.
Age of woman when she starts to try to conceive | % who will have no live birth according to Vincent (1950) | % who will have no live birth according to Henry (1953), England | % who will have no live birth according to Henry (1953), Norway | % who will have no live birth according to Pittenger (1973) | % who will have no live birth according to Leridon (1977) | % who will have no live birth according to Trussell-Wilson (1985) | % who will have no live birth according to Menken-Larsen (1986) |
---|---|---|---|---|---|---|---|
20 | 4 | 3.5 | 3.5 | 2.2 | 3 | – | 4 |
25 | 6 | 6 | 5 | 3.3 | 6 | 6 | 7 |
30 | 10 | 11 | 8 | 6.5 | 10 | 11 | 12 |
35 | 17 | 19 | 13 | 16 | 17 | 16 | 22 |
40 | 37 | 33 | 24 | 40 | 29 | 24 | 46 |
45 | 75 | 58 | 50 | 79 | 50 | 58 | – |
II. Women are born with a finite number of eggs:
Some women have more, some are less, every month during the menstrual cycle approximate a thousand eggs are mature and only one can have the chance to be fertilized by their partner’s sperm.
1) Eggs and Age:
The eggs in the ovaries decrease with increasing age Assuming there are 150,000 follicles in the ovaries between the age of:
- a) 18 – 30 around 120,000 left and this the time of optimal fertility.
- b) 31-37 around 100,000 left and the fertility rate is on the downward trend.
- c) 38- 41 around 50,000 left and the infertility rate increases at the fastest rate.
- d) 41- 45 around 10,000 left and you reach the end of fertile.
2). Infertility risk and age:
- a) In the late 20 and early 30, 84 % are fertile and only 16 are infertile.
- b) In the mid 30 – 39, 75 % are fertile and only 25% are infertile.
- c) By age 40 the 50% are fertile and 50% are infertile.
Assuming the couple is healthy. Remember the older you age, the risk of reproductive organ malfunction also increase including endometriosis and fibroid.
III. Some unfertilized women and men sometimes ago are fertilizing, because of whatever reasons.
Here are the most common reasons:
- 1. Persuade a personal career.
- 2. Try to be financially stable before having children.
- 3. Too young to be a parent, raising a child needs efforts, time, and money.
- 4. Enjoy the couple childless years before committing.
- 5. Etc.
Most of,
The women delay conceiving by taking contraceptive pills or condoms or other methods to prevent unwanted pregnancy. Unfortunately, by the time they think that they are ready to have children, they are in their mid thirty, their period now becomes irregular (may be caused by withdrawal symptoms from years of taking a contraceptive pill) and the risk of infertility is high according to the statistics.
Since our body needs at least six months to adjust to the effects of withdrawal medicine, some women may take longer and some may never see their period coming back again.
The statistic shows that,
if a couple decides to have children and not conceive within 12 months, it may cause unnecessary stress which may make conception even more difficult.
Therefore, planning yourself and if you want to have children, have it as early as possible. Otherwise, please consult with your doctor and aware that there are many types of treatment in case you are infertility.
The leading causes of infertility that prevent pregnancy include:
- The maternal age is greater than 35.
- Ovulatory dysfunction leading to female infertility.
- Anatomical issues in the uterus or fallopian tubes.
- Sperm disorders causing male infertility.
2. Understand Male Biological Clock:
Even though the sperm in the male reproductive organ does not change much, The quality and quantity of sperm may be reduced by low levels of testosterone due to aging. Therefore, you can see why a couple in their late 20’s is easier to conceive than a couple with a wife in her 20’s and a husband at the age of 40 and more.
Study shows that,
the odds of male fertility rate decreases at an alarming rate of 11% every year and the chance for his partner to conceive declines even further.
According to the study of the European Society of Human Reproduction and Embryology, the rate of miscarriage also increases substantially when the father was over the age of 35.
- 1. Nearly 17 percent if the father was over 34 years old.
- 2. Around 20 percent if the father was between the ages of 35 and 39.
- 3. Over 32 percent if the father was older than 44.
Most couples delay unwanted conception by having the female partner take the contraceptive pill or by using condoms, or other methods.
Unfortunately,
by the time they think that they are ready to have children, they are in their mid-thirties and according to the above statistics, the rate of fertility is low and the risk of miscarriage is increased substantially, not counting the risk of giving birth to a child with a defection, including chromosomal abnormalities.
Like an old car, no matter how much money you spend each year to fix it, it will never work like when it was new.
It is wise for a couple to conceive no later then the age of late 20’s and early 30’s to prevent any unnecessary stress caused by infertility within 12 months after they decide to have a baby.
Some possible causes of male infertility:
- The most common issues that lead to infertility in men are problems that affect how the testicles work.
- Other problems are hormone imbalances or blockages or the absence of some of the ducts in the male reproductive organs. Lifestyle factors and age-related factors also play a role in male infertility.
- A complete lack of sperm is the cause of infertility in about 15% of men who are infertile.
- When a man does not produce sperm, it is called azoospermia (pronounced ay-zoh-uh-SPUR-mee-uh). A hormone imbalance or a blockage of sperm movement can cause azoospermia.
-
In some cases of infertility,
- A man produces less sperm than normal. This condition is called oligospermia (pronounced OL-ih-goh-SPUR-mee-uh) or a low sperm count. The most common cause of oligospermia is varicocele (pronounced VAR-ih-koh-seel), an enlarged vein in the testicle.
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Disclaimer: “Nothing in this article makes any claim to offer cures or treatment of any disease or illness. If you are sick please consult with your doctor.”
References:https://ods.od.nih.gov/factsheets/ https://www.niddk.nih.gov/ –