AIR POLLUTION ATTACKS HUMAN FERTILITY

<div class="MsoNormal"> <br /></div> <div class="MsoNormal"> <br /></div> <div class="MsoNormal"> <span style="font-size: 16.0pt; line-height: 115%;">     Air pollution threatens the perpetuation of the species. Or at least, it greatly hinders it. Beyond respiratory diseases or lung tumors, whose link with poor air quality is well known and admitted by the World Health Organization (WHO), a group of researchers have found that air pollution also affects To fertility, both female and male. Doctors at the Barcelona Sea Hospital and its research center (IMIM) have done two reviews of the scientific literature to study the impact of exposure to pollutants on the rate of human infertility and have concluded that air pollution reduces fertility And increases the risk of miscarriages.<o:p></o:p></span></div> <div class="MsoNormal"> <span style="font-size: 16.0pt; line-height: 115%;">     The study, commissioned by the American Society of Reproductive Medicine and published in the journal Fertility and Sterility, warns of the environmental effects on fertility. "In fertile women, pollution reduces the fertility rate and increases the risk of miscarriage and, likewise, in women who use in vitro fertilization techniques, the impact of air pollutants reduces the number of births and causes More abortions, "said Dr. Miguel Ángel Checa, head of the study and head of the human reproduction section of the gynecology and obstetrics department of the Hospital del Mar.<o:p></o:p></span></div> <div class="MsoNormal"> <span style="font-size: 16.0pt; line-height: 115%;">     In the first review, Checa and his team studied the impact on male and female fertility through the analysis of several pollutants: fine particles (PM), nitrogen dioxide, sulfur dioxide and The carbon monoxide. According to the doctor, the research corroborates that fine particles - they are suspended in the air in a liquid and solid state and, when inhaled, they pass to the bronchi (can cause cancer) and to the sanguineous torrent - generate that, in assisted reproduction, "there Fewer live births and more miscarriages. " A population-based study in Barcelona found a relationship between elevated PM levels and reduced pregnancy rates, a finding similar to that found in other research in the USA and the Czech Republic.<o:p></o:p></span></div> <div class="MsoNormal"> <span style="font-size: 16.0pt; line-height: 115%;">Nitrogen dioxide, for its part, also "increases the risk of miscarriages in spontaneous reproduction and in vitro fertilization when patients are exposed to high concentrations of this gas." Sulfur dioxide and carbon monoxide, all from the combustion of fossil fuels, also help increase the rate of miscarriages. "In summary, the number of live newborns in in vitro fertilization, the rate of embryo implantation, and abortion increase," Checa says.<o:p></o:p></span></div> <br /> <div class="MsoNormal"> <span style="font-size: 16.0pt; line-height: 115%;">     In the second review, the research focused on sperm quality after assessing exposure to the same contamination parameters. "We have reviewed 17 studies in which patients subjected to these levels of contamination have sperm damage, in terms of number, mobility and deformity," says the doctor, who also heads the IMIM research group. If the iconic image of the sperm is characterized by a long tail and an oval head, researchers have found that by exposing these cells to atmospheric pollution, they end up with deformed heads less fertilizers, for example. In addition, more specific studies found that the DNA of these spermatozoa is fragmented. "If the DNA strands break, when it joins the oocyte, these chains of the two do not spliced ​​together," he says.<o:p></o:p></span></div>

air pollution human fertility AIR POLLUTION ATTACKS HUMAN FERTILITY

     Air pollution threatens the perpetuation of the species. Or at least, it greatly hinders it. Beyond respiratory diseases or lung t...

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