Sperm counts of Western men plummeting, analysis finds (CNN?)

Story highlights

  • Scientists analyzed 185 studies which included more than 42,000 men
  • No significant declines were seen in sperm counts of men living in South America, Asia and Africa

(CNN)Sperm counts of men in North America, Europe, Australia and New Zealand are plunging, according to a new analysis published Tuesday.

Among these men there has been a 52% decline in sperm concentration and a 59% decline in total sperm count over a nearly 40-year period ending in 2011, the analysis, published in the journal Human Reproduction Update, said.
Scientists determine sperm count by looking at a sample of ejaculate under a microscope. For sperm concentration, they measure how many millions of sperm there are in each milliliter of fluid. Sperm count, then, is sperm concentration multiplied by the total volume of an ejaculate.
Researchers led by Dr. Hagai Levine of Hebrew University of Jerusalem examined thousands of studies and then conducted a meta-analysis of 185 studies. These included 42,935 male participants who provided semen samples between 1973 and 2011. The chosen studies were well distributed over the nearly 40 years of the study period and among 50 different countries. The analysis included information on fertility status, age, ejaculation abstinence time, semen collection method, sperm count method and geographic location at the level of continent.
Based on their analysis, the international team of researchers from Brazil, Denmark, Israel, Spain and the United States reported a decline in sperm concentration of 1.4% per year with an overall drop of 52.4% during the entire study period for men living in industrialized, Western countries. Meanwhile, total sperm count among the same group plunged 1.6% per year and 59.3% overall. By comparison, the researchers found no significant declines in the sperm counts and sperm concentrations of men living in South America, Asia and Africa.
"The extent of the decline is a heartache," said Levine. "It's hard to believe -- it's hard to believe for me."
The high proportion of men in Western countries with sperm concentrations below 40 million/ml is "particularly concerning," wrote Levine and his co-researchers, because evidence indicates that a sperm concentration below this threshold is associated with a "decreased monthly probability of conception."

Views: 18

Reply to This

Replies to This Discussion

Here is a possible reason

https://youtu.be/2NlCXycETlc

RSS

"Destroying the New World Order"

THANK YOU FOR SUPPORTING THE SITE!

mobile page

12160.info/m

12160 Administrators

 

TOP CONTENT THIS WEEK

Latest Activity

Mr. Sizzle commented on stormtruther's blog post Watch Bill Gates Laughing While Saying ‘We Take GMO Organisms & Shoot Them Right Into Little Kids Veins’
"Found…"
2 hours ago
MAC favorited Doc Vega's blog post Democrats tell us President Trump is incompetent Oh really?
3 hours ago
Mr. Sizzle posted photos
4 hours ago
Mr. Sizzle commented on Old Denmark's video
Thumbnail

The MINNEAPOLIS Riot *part 2* May 27th 2020 RIP George Floyd

"In other news, this happens everyday in the US and the (((MSM))) is totally silent about…"
4 hours ago
Mr. Sizzle commented on Old Denmark's video
Thumbnail

The MINNEAPOLIS Riot *part 2* May 27th 2020 RIP George Floyd

"It’s all planned by the Soros contingent to start a race war since the fake virus plan…"
5 hours ago
Mr. Sizzle favorited Old Denmark's video
5 hours ago
Mr. Sizzle commented on stormtruther's blog post Watch Bill Gates Laughing While Saying ‘We Take GMO Organisms & Shoot Them Right Into Little Kids Veins’
"The Matthew 18: 6,7 quote is quite appropriate for what Bill Gates of Hell should face."
5 hours ago
stormtruther's video was featured
6 hours ago
Less Prone commented on Old Denmark's video
Thumbnail

The MINNEAPOLIS Riot *part 2* May 27th 2020 RIP George Floyd

"Documents Detail Plan to Create Civil Unrest and Martial Law "Two years ago, official-looking…"
6 hours ago
Cryptocurrency's discussion was featured

The Rockefeller File

The Rockefeller Fileby Gary Allen…See More
6 hours ago
Mr. Sizzle favorited stormtruther's blog post Watch Bill Gates Laughing While Saying ‘We Take GMO Organisms & Shoot Them Right Into Little Kids Veins’
6 hours ago
Mr. Sizzle favorited James Roberts's photo
6 hours ago
Mr. Sizzle favorited James Roberts's blog post Russian Court Keeps Historian of Stalinist Massacres Jailed Amid COVID-19 Outbreak
6 hours ago
James Roberts's 2 blog posts were featured
6 hours ago
Less Prone favorited Chris of the family Masters's blog post Nature is Resilient - and So are You
6 hours ago
Larry Flinchpaugh's blog post was featured
6 hours ago
Doc Vega's 2 blog posts were featured
6 hours ago
stormtruther's 3 blog posts were featured
6 hours ago
Less Prone favorited stormtruther's blog post Google Drive Takes Down Personal Copy Of "Plandemic" (Thats Fucked!)
6 hours ago
Less Prone favorited Doc Vega's blog post How Disinformation has Been Used to Change our Modern Society We Were Warned a long Time Ago!
6 hours ago

© 2020   Created by truth.   Powered by

Badges  |  Report an Issue  |  Terms of Service

content and site copyright 12160.info 2007-2019 - all rights reserved. unless otherwise noted