It Turned Out That Air Pollution Decreases Sperm Quality

Researchers have long air pollution and sperm quality However, it was unclear whether air pollution had negative health effects on male fertility, as the results of the studies were often inconsistent. However, according to a new study, air pollution generally affects the fertility of the entire population. negative There seems to be good reason to believe that it does.

According to the study published in the journal JAMA Networks and conducted on 30,000 men in China, air pollution, especially sperm motility, which is the ability of sperm to swim in the right direction, semen quality turned out to be quite negative. In addition, the smaller the size of airborne pollutant particles, the greater the link with poor semen quality. large was stated.

Particulate matter of different sizes affects sperm at different rates.

In the past months, the effects of air pollution on sperm count have been investigated and it has been revealed that pollution reduces sperm count. A new study by researchers at the Tongji University School of Medicine in Shanghai found air pollution to varying degrees, among them. exposed and their wives, with their wives’ sperm reproductive technology The data records of a total of 33,876 men who became pregnant with the help of the doctor were analyzed. After this analysis, the researchers investigated samples between semen quality for whether participants were exposed to amounts of particulate matter smaller than 2.5 micrometers, 2.5 to 10 micrometers, and 10 micrometers in diameter, at various moments during the 90-day period prior to their hospital visit.

To determine the quality of semen, researchers focused their studies on factors such as sperm count, sperm concentration and sperm motility. As a result of their analysis, although the researchers did not find a significant link between air pollution and sperm quality in terms of sperm count or concentration, smaller particulate matterThey found that greater exposure to Sperm affected both progressive sperm motility, which is the ability of sperm to swim forward, and sperm motility, which is the overall swimming ability of sperm.

Sperm motility decreases when exposed to particles

Specifically, it predicted sperm motility when exposed to particulate matter less than 2.5 micrometers in diameter. 3.6%Researchers who observed a decrease of . decrease in sperm motility when exposed to particulate matter 10 micrometers in diameter. 2.44% they realized it was. Based on this, the researchers found that the smaller the different size fractions of particulate matter, the easier it is to go deeper into the lung, on sperm quality. different effects They came to the conclusion that it could be.

In addition, according to the data obtained in the study, exposure to air pollution the first stage of the sperm production process It shows its effects more clearly when it occurs at the stage of spermatogenesis, which is Researchers speculate that this may be due to particulate matter affecting sperm at the genetic level, although more research is needed to fully understand this.

“Our findings suggest that smaller particulate matter size fractions may be more potent than larger fractions at inducing poor sperm motility” The authors of the article express that these findings are related to air pollution exposure of reproductive age men. of the reduction points out its importance.

The findings are insufficient to state a definite relationship between sperm deformation and air pollution.

Allan Pacey, professor of andrology at the University of Sheffield, who was not in the research team, said that this study is a part of the link between air pollution and sperm quality. beyond probability states that it proves to be true.

On the other hand, Pacey stated that the decrease in sperm motility is quite low and that the findings should be approached with some suspicion; In the article, no information is given about the morphology, shape and size of the sperm, which is due to the deformation of the sperm. of pollution He states that it makes it impossible to determine whether he is responsible.

Although the data suggest that pollution may have an adverse effect on sperm motility, whether this would have an overall significant clinical impact and result in an overall reduced reproductive ability of males in high pollution areas. to understand precisely There is still not enough information for