A lot of things happened in 2022. This ups and downs is about to pass. Israeli scientists published a paper in November pointing out that the sperm count in men around the world fell sharply.
Compared with 1973, the number of sperm in male semen decreased by 62% and the concentration decreased by 52%. This paper summarizes research from 53 countries over the past 40 years, and is solid.
Global male sperm count plummeted
In 1973, the number of sperm in 1 ml of semen could reach 101 million, and by 2018 there were only 49 million left. Moreover, the rate of sperm decline is also accelerating. Before 2000, the annual decline in sperm concentration was about 1.16%, and the speed doubled after 2000 to 2.64%.
Coincidentally, human sperm banks in Shanghai and Zhejiang, my country also found that men who came to the sperm bank to donate sperm cannot provide sufficient quality semen and cannot meet the storage standards.
In addition to sperm count and concentration, the sperm bank staff also found that the average forward motility percentage of sperm also decreased. The so-called average forward movement of sperm is the sperm that can move forward all the way, find the egg and successfully inseminate. In 2005, 56.5% of the sperm collected in the sperm bank dared to move forward, and by 2015, it dropped to 51.6%.
Some people may say that with the promotion of the concept of donation of sperm , more and more uncles donate sperm. It is these elderly semen that cause the quality to decline. However, statistics on college students and young and middle-aged people also came up with consistent results.
In 2018, Fudan University Human Sperm Bank was established. The people who came to donate sperm can be called human stars, most of which come from universities, foreign enterprises and state organs. They are all around 30 years old, which is a year of fighting. However, after the sperm bank evaluation, less than 10% of the sperm that passes the health and meets the entry standards.
2015 Huazhong University of Science and Technology specializes in studying the college student population. Among the young and strong young men, 15% of the participants did not meet the sperm quality. And after comparing the results of this study with previous years, scientists also found a trend of declining sperm concentration.
Ah, this is not a bad cake?
Human reproductive crisis?
You should know that humans can only come from the combination of sperm and egg. The lack of quality sperm means half of the sky that my father has supported has collapsed.
Moreover, too little sperm is medically called oligospermia. If the number of sperm per milliliter is less than 20 million, it is oligospermia.
mentioned above the importance of forward movement of sperm. Only sperm moving forward can frighten the egg. If the proportion of this type of sperm is too small, even if the sperm count meets the standard, it is a disease called asthenospermia.
Whether it is sperm or weak sperm, it may be accompanied by sperm deformity, affecting the health of offspring.
Oligospermia and asymptospermia are both diseases. They must go to a regular medical institution and be diagnosed after professional examinations and laboratory tests. Only then should you not feel panic or feel hot, and you will be anxious to seek medical treatment!
Moreover, there is no need for everyone to think that humans are about to be extinct. The average number of sperm per milliliter identified by scientists in the laboratory is 49 million, and it can only be called oligospermia if it drops below 20 million.
So, most people may not meet the "high-quality" sperm required by the sperm bank, and they are still far from the disease state.
Can dad still hold up half of the sky?
Although the plummeting sperm count does not have a fatal threat to the human species for the time being, it is only temporary. If this trend continues, then one day, human males will no longer be able to continue to provide qualified sperm. On that day, it would be too late to find a solution.
WTO has evaluated infertility as the third largest disease that endangers human life and health. The top two are tumors and cardiovascular and cerebrovascular diseases . Among the people who reach childbearing age around the world, infertility accounts for about 12%-20%, with the total number exceeding 100 million. The proportion of infertility is higher in developed countries, even reaching 25%.
The proportion of infertility in my country is slightly lower, hovering between 12% and 15%.But this cannot resist the large population of our country! If we only look at the total number of people, the number of infertile people in our country exceeds 50 million, which is more than the total population of some small countries.
About 50% of the infertile patients in my country are male. If we consider the face-loving mentality of many male compatriots, the number of male infertility patients may actually be more. If we look at the world, infertile patients are already more male.
So, if any brother faces similar difficulties, it is better to go to a regular hospital for a check-up, and don’t just think about making things difficult for his wife. After all, a family requires father and mother to support half of the sky. Why did the sperm count plummet?
From 1973 to 2018, the decline in sperm count is inseparable from the development and transformation of human society. It can be said that this phenomenon is both a "disease of wealth and honor" and a "disease of poverty".
First of all, human life quality is getting better and better overall, and eating is no longer a dream, but a necessity of daily life. With the development of industry, more and more foods are produced in our daily diet. Enjoyment like a cigarette or a wine is also common for most people.
It can be said that in the long evolutionary history of mankind, no generation has ever enjoyed this blessing.
However, our human body structure is inherited by our hard-working ancestors. The body can't stand this blessing.
Therefore, high oil and high sugar bring about obesity, which further leads to various abundance diseases, including abnormal metabolic and hormone levels. Decreased sperm count and quality are one of the manifestations.
As for the two major hobbies of cigarettes and alcohol, they are something that our ancestors had never heard of when they were on the trees. The human body can only enjoy temporary pleasure, but it has to bear the long-term consequences of tobacco and alcohol.
Cigarettes contain nicotine , tar and other species, and wine is even rich in alcohol. These substances will damage human cells, and sperm, which are particularly fragile, will also be severely damaged.
So, eating and drinking well just reduces the quality of semen. The young men who want children must keep their mouths and legs open. If you want to shoulder the burden of your family, you don’t have a good health but you can’t even get the qualification to enter.
Secondly, with the development of society, the number of people engaged in mental labor has increased year by year, and urban white-collar workers have also become widely envied professions. Parents even hope that their children can find an office job and not face the loess and backs against the sky like themselves.
However, both "sitting" and "office" are killing male compatriots' sperm bit by bit. The poor migrant workers who were awakened by their deposit balance every day also suffered a decline in sperm count over time.
Research on neurasthenia shows that mental burden is more likely to lead to neurasthenia than manual labor. Although there are air conditioners and coffee in the office, there is also constant mental pressure. As mental stress increases, sperm's motility ability plummets, about 47% of them will be insufficient in vigour.
The male testicles are outside the body. Sitting for a long time will compress the blood vessels that supply blood to the testicles, resulting in varicocele and blood circulation disorders. The trousers and jeans you wear at work will also put your friends in a hot and humid environment.
The fragile thing like the testicles has evolved outside the body, precisely because the temperature required for healthy testicles is lower than the core body temperature of the human body. I took the office to work, took the subway after get off work, and took a hot shower to wash away the fatigue of the whole day when I got home. People relax and lie flat, and their testicles and sperm are "cooked".
In addition, with the development of industrialization, the global pollution level is also rising steadily, and there are many types of pollutants.
Common phthalate and perfluoroalkyl substances in plastics will cause a decrease in sperm count. Among them, phthalate is also called "obesity hormone" because it can interfere with the human endocrine system and lead to weight gain.
However, human beings have no way to leave plastic, let alone escape from modern industrial society. Where humans go depends on our ability to control pollution.
Whether it is for your own health or for future generations, a balanced diet, moderate exercise, and a comfortable mood are all necessary. As for the factors that cannot be changed in personal power... Anyway, the world is as hot and cold as possible, so we can only think about it a little bit.
