Release date: 2017-07-31 Recently, the British BBC reported that according to a recent study published in the journal Human Reproductives News, the number of male sperm is decreasing at an unprecedented rate. In the long run, humans will be extinct. In this paper entitled "Temporal trends in sperm count: a systematic review and meta-regression analysis", the researchers found that in less than 40 years by comparing 200 samples from North America, Europe, Australia, and New Zealand. During the time, the sperm concentration of men decreased by 52.4%, and the total sperm count decreased by 59.3%, which was reduced by more than half. Dr. Hagai Levine Although the results of the survey were questioned by some members of the academic community, Dr. Hagai Levine, who was in charge of the study, said the results were shocking if we did not change our living environment and purify our daily routine. The amount of human sperm that is exposed to the human body is reduced at this rate. In the end, the fertility problem will be extremely serious, and more and more people will have infertility problems. I am very worried about this situation. " It is understood that the study is the largest assessment ever, bringing together the results of 185 studies from 1973 to 2011. The study also shows that this rate of decline is continuing and may even increase. Dr. Haga Laven told the BBC that if this trend continues, humanity will become extinct. For Dr. Haga Lavin’s statement, scientists who did not participate in the study believe that it may be too early to draw such a conclusion. In contrast, the number of male sperm in South America, Asia and Africa has not been observed to show a significant decline. However, the researchers pointed out that this is because there are very few studies on male sperm in these areas. This is not the first study on sperm count. Many previous studies have shown that there has been a similar sharp decline in the number of male sperm in developed countries, but skeptics believe that these studies are based on research methods and specific operations. There are omissions and defects, such as only investigating a relatively small number of men, such as not using the same sample, or there are some men who already have infertility in the sample, and the method of calculating sperm in the early stage may be overestimated. With its true number, these factors can lead to the wrong view of the decline in sperm count. However, the researchers in the study claimed that they have fully considered these situations and have taken appropriate preventive measures, and said that the new study covers a wider range and uses a rigorous meta-regression analysis. The statement also caused some "skeptics" to have reduced their suspicions about the conclusions, and Professor Allan Pacey of the University of Sheffield in the United Kingdom was one of them. He said: "This study by Dr. Lavin and his team avoids many of the shortcomings of previous research." At the same time, he also believes that this research is necessary, such as the incidence of testicular cancer is rising, male sex Functional issues deserve attention. However, Professor Allen Passy also said that although the new study reduced the possibility of error, it did not completely eliminate these errors. He said: "The results of the study should be treated with caution. This debate has not yet been resolved. Obviously there is still a lot of work to be done." Richard Sharpe, a male reproductive health expert at the University of Edinburgh, agrees with the study, saying that the results are similar to the results of a study he has at hand, and that men do have a recession. However, he added that the reasons behind this phenomenon remain unclear because we have invested very little in male reproductive research. The Danish expert Tina Jensen did not agree that she had conducted a 15-year study of men in Danish military service, and the results showed that the number of sperm in men did not decrease. But she also said that this may be because most men do not have much sperm. Although the survey led by Dr. Haga Lavin has been questioned in many academic circles, industry experts have said that the results of this investigation warn people to take fertility seriously. At present, scientists have not found valid evidence to prove that the number of sperm is small, but scientific research shows that chemicals in pesticides and plastic products, obesity, smoking, excessive stress, eating habits, and the length of watching TV. Both are related to the decline in semen quality. Dr. Haga Lavin said that researchers need to find out the immediate cause of the reduction in sperm count and find ways to promote sperm. This promotes legislation that limits the presence of harmful chemicals in everyday life. As far as the current survey results are concerned, encouraging smoking bans and eradicating obesity remains the focus of increasing fertility. Source: Medical Valley
CE Certified Disposable Medical Surgical Caps :
Disposable Medical Bouffant Caps are made of thickened and Breathable non-woven fabric : The fabric is comfortable and soft, dustproof and odorless. Medical cap, Elastic, Not tight. Thicker materials for better isolation and protection. Control and protect hair in medical and surgical environments. Hospital Head Cover,Surgical Head Cover,Medical Head Cap,Hair Covers For Hospital Workers Suzhou JaneE Medical Technology Co., Ltd. , https://www.janeemedical.com