Oh My! Male Sperm Count Has Dropped Nearly 60% In These Countries Since 1973 – Here’s Why

Written by on July 28, 2017 in Hazards, Issues & Diseases, Health with 0 Comments

By April McCarthy | Prevent Disease

An analysis of research into male fertility suggests that there has been a steep decline in sperm counts for men living in richer nations.

The review pooled data from 185 different studies, and found a 59.3 per cent drop between 1973 and 2011 in the average amount of sperm produced by men from North America, Europe, Australia and New Zealand. No similar pattern was seen in South America, Asia and Africa, although fewer studies had been conducted in these countries.


Dietary and environmental exposures, as well as pharmaceuticals, are all linked to the quality of male sperm, revealing that toxins in many substances we interact with affect sperm maturation and membrane function in men. This means that men who are at increased risk of sperm DNA damage because of advancing age can do something about it.

“Given the importance of sperm counts for male fertility and human health, this study is an urgent wake-up call for researchers and health authorities around the world to investigate the causes of the sharp, ongoing drop in sperm count,” says Hagai Levine, of the Hebrew University of Jerusalem, who worked on the analysis.

“The fact that the decline is seen in Western countries strongly suggests that chemicals in commerce are playing a causal role in this trend,” says team-member Shanna Swan, of the Icahn School of Medicine at Mount Sinai, New York.

Confirmation

Exposure to chemicals in the womb, adult exposure to pesticides, smoking, stress and obesity have all previously been linked to lower sperm counts. But previous studies reporting falling sperm counts have been challenged by some for being unreliable.

“Previous smaller studies have suffered from confounding factors, including the fact that methods of counting sperm in the laboratory might have changed over the years, or that the populations of men being studied might have changed,” says Daniel Brison, at the University of Manchester, UK.

“This new analysis overcomes those problems by including a large number of studies of varying design and location around the world, to confirm that the decline in sperm counts is likely to be real,” says Brison.

Allan Pacey, of the University of Sheffield, UK, says that, despite the decline found in the study, average sperm counts still remain in the normal range.


Read more great articles at Prevent Disease.

Tags: , , , , ,

Subscribe

If you enjoyed this article, subscribe now to receive more just like it.

Subscribe via RSS Feed Connect on YouTube

New Title

NOTE: Email is optional. Do NOT enter it if you do NOT want it displayed.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

FAIR USE NOTICE. Many of the articles on this site contain copyrighted material whose use has not been specifically authorized by the copyright owner. We are making this material available in an effort to advance the understanding of environmental issues, human rights, economic and political democracy, and issues of social justice. We believe this constitutes a 'fair use' of the copyrighted material as provided for in Section 107 of the US Copyright Law which contains a list of the various purposes for which the reproduction of a particular work may be considered fair, such as criticism, comment, news reporting, teaching, scholarship, and research. If you wish to use such copyrighted material for purposes of your own that go beyond 'fair use'...you must obtain permission from the copyright owner. And, if you are a copyright owner who wishes to have your content removed, let us know via the "Contact Us" link at the top of the site, and we will promptly remove it.

The information on this site is provided for educational and entertainment purposes only. It is not intended as a substitute for professional advice of any kind. Conscious Life News assumes no responsibility for the use or misuse of this material. Your use of this website indicates your agreement to these terms.

Paid advertising on Conscious Life News may not represent the views and opinions of this website and its contributors. No endorsement of products and services advertised is either expressed or implied.
Top
Send this to a friend