Two American studies revealed that the number of sperm counts in men is decreasing and getting worse and it is a continuous situation for a long time now, in the United States and Europe at least.
The studies, which were unveiled at the Scientific Conference of the American Society for Reproductive Medicine (ASRM) in Denver, indicated that the number of sperms in American and European men and sperm motility – that is, the ability to “swim” for sperm cells – decreased in the past decade, to follow a broader similar approach. Many scientists have observed it over the past few decades.
One of the studies presented at the conference, conducted by the Fertility Center in New Jersey and the Fertility Center in Spain, found that the percentage of about 120,000 patients suffers from male infertility and the number of moving sperms (TMSC) is more than 15 million (sperm counts). They are considered low, according to the Mayo Clinic decreased from 85 percent in 2002-2005 to 79 percent in 2014-2017.
While the percentage of patients whose sperm counts recorded was 0 to 5 million, from 9% to more than 11.5%.
Another study, conducted by researchers at the Icahn College of Medicine in cooperation with California Cryobank and the Association of Reproductive Medicine Partners (ARMP) in New York, compared more than 124,000 samples from 2,600 sperm donors aged 19 to 38 in Los Angeles, Palo Alto, Houston, Boston, Indianapolis, and New York City.
Sperm counts in the Western world are in rapid decline. But nobody knows why pic.twitter.com/dVPWrjzAd5
— The Economist (@TheEconomist) December 22, 2019
The researchers found that the total sperm counts, sperm concentration, and TMSC all decreased over time from 2007 to 2017, except for New York City, where the three parameters remained constant.