Quantcast
Connect with us

Huge drop in men’s sperm levels confirmed by new study – here are the facts

Published

on

Sperm count in men from North America, Europe, Australia and New Zealand declined by 50-60% between 1973 and 2011, according to a new study from the Hebrew University of Jerusalem. Surprisingly, the study, which analysed data on the sperm counts of 42,935 men, found no decline in sperm counts in men from Asia, Africa and South America, although there was limited data from these areas.

Overall, this is a very disturbing report. There has been a longstanding debate among scientists as to whether sperm counts have decreased or not. But what’s different about this study is the quality of the analysis. It was done in a systematic manner, accounting for several of the problems that had affected previous studies, such as the method used to count sperm and comparing studies performed sometimes decades apart. As such, most experts agree that the data presented is of a high quality and that the conclusions, although alarming, are reliable.

ADVERTISEMENT

So what is going on? There has been concern for a number of years about an increase in abnormalities in male reproductive health, such as testicular cancer. The decline in sperm counts is consistent with these increases and this adds weight to the concept that male reproductive health is under attack and is declining rapidly.

In fact, if the data on sperm counts is extrapolated to its logical conclusion, men will have little or no reproductive capacity from 2060 onwards. The most rational explanation for the decline in male reproductive health is the changes in the environment. Current research suggests that the male foetus is particularly susceptible to exposure to pollutants and so changes that occur early in foetal life can have a very significant effect on the adult.

What can be done?

The simple answer is that we need much more research to find out why this decline in sperm count is happening. We cannot be complacent about the potential negative effect on fertility and must now urgently rally to substantially increase the research effort into male reproductive health.

Also, although the prevailing evidence shows a decline in reproductive health, not all studies show this; there are some geographical differences. It will be critical to determine what the key differences between geographical regions are – such as genetic differences and exposure to specific pollutants – so we can then examine treatment strategies to limit these negative effects.

ADVERTISEMENT

The ConversationIf it’s the foetus that is mainly affected, what can the adult man do? Even in adults, exposure to chemicals, such as bisphenol A, which are thought to affect fertility, can have a negative effect, so men should limit their exposure to toxic chemicals. This includes stopping cigarette smoking. Also, a healthy lifestyle is very important as there is a known link between obesity and reduced sperm count.

By Chris Barratt, Professor of Reproductive Medicine, University of Dundee

ADVERTISEMENT

This article was originally published on The Conversation. Read the original article.

Enjoy this piece?

… then let us make a small request. Like you, we here at Raw Story believe in the power of progressive journalism — and we’re investing in investigative reporting as other publications give it the ax. Raw Story readers power David Cay Johnston’s DCReport, which we've expanded to keep watch in Washington. We’ve exposed billionaire tax evasion and uncovered White House efforts to poison our water. We’ve revealed financial scams that prey on veterans, and legal efforts to harm workers exploited by abusive bosses. We’ve launched a weekly podcast, “We’ve Got Issues,” focused on issues, not tweets. And unlike other news outlets, we’ve decided to make our original content free. But we need your support to do what we do.

Raw Story is independent. You won’t find mainstream media bias here. We’re not part of a conglomerate, or a project of venture capital bros. From unflinching coverage of racism, to revealing efforts to erode our rights, Raw Story will continue to expose hypocrisy and harm. Unhinged from billionaires and corporate overlords, we fight to ensure no one is forgotten.

We need your support to keep producing quality journalism and deepen our investigative reporting. Every reader contribution, whatever the amount, makes a tremendous difference. Invest with us in the future. Make a one-time contribution to Raw Story Investigates, or click here to become a subscriber. Thank you. Click to donate by check.

Enjoy this piece?

… then let us make a small request. Like you, we here at Raw Story believe in the power of progressive journalism — and we’re investing in investigative reporting as other publications give it the ax. Raw Story readers power David Cay Johnston’s DCReport, which we've expanded to keep watch in Washington. We’ve exposed billionaire tax evasion and uncovered White House efforts to poison our water. We’ve revealed financial scams that prey on veterans, and efforts to harm workers exploited by abusive bosses. We’ve launched a weekly podcast, “We’ve Got Issues,” focused on issues, not tweets. Unlike other news sites, we’ve decided to make our original content free. But we need your support to do what we do.

Raw Story is independent. You won’t find mainstream media bias here. We’re not part of a conglomerate, or a project of venture capital bros. From unflinching coverage of racism, to revealing efforts to erode our rights, Raw Story will continue to expose hypocrisy and harm. Unhinged from corporate overlords, we fight to ensure no one is forgotten.

We need your support to keep producing quality journalism and deepen our investigative reporting. Every reader contribution, whatever the amount, makes a tremendous difference. Invest with us in the future. Make a one-time contribution to Raw Story Investigates, or click here to become a subscriber. Thank you.



Report typos and corrections to: [email protected]. Send news tips to: [email protected].
READ COMMENTS - JOIN THE DISCUSSION
Continue Reading

Breaking Banner

He ‘knows where lots of Trump bodies are buried’: Ex-Mueller associate says president’s latest dissension spells trouble

Published

on

President Donald Trump has reportedly fallen out with a decades-long friend, private equity real estate investor Tom Barrack, who is currently the focus of a federal investigation into how the money from Trump's inaugural fund was raised and spent.

On Monday, former federal prosecutor Glenn Kirschner laid out a key reason why Trump may want to distance himself from Barrack at this point:

Televised hearings are in our future (can’t come soon enough). Tom Barrack knows where lots of Trump’s bodies are buried (figuratively speaking), inaugural committee bodies and others. Let’s hope Barrack is already quietly assisting prosecutors. https://t.co/BlgsiaX0YP

Continue Reading

Facebook

Brazilian President Jair Bolsonaro takes on Norway for whaling, but bungles it

Published

on

Brazilian President Jair Bolsonaro on Monday responded to Norway's decision to halt its forest protection subsidies, taking to Twitter to criticise the Scandinavian country for its whaling practice and post spectacular -- albeit misleading -- images.

"Look at the killing of whales sponsored by Norway," Bolsonaro wrote on Twitter.

The post includes a video and photographs of a spectacular whale hunt, where mammals in the shallow waters of a bay are slaughtered by people wading on shore, armed with hooked knives. The whales' blood turns the waters red.

However, the images, reportedly taken on May 29 in Norway, illustrate a "grind", a type of pilot whale hunt practised exclusively in the Faroe Islands -- a Danish territory in the North Atlantic.

Continue Reading
 

Facebook

Orange County teens busted for singing obscure Nazi song while giving Hitler salutes

Published

on

Nearly a dozen high school students from Southern California delivered Nazi salutes and sang a Nazi marching song in a video posted on social media.

The video was uploaded to Instagram by one member of the boys’ water polo team at Pacifica High School in Garden Grove, California, along with lyrics to the song played for German troops during World War II, reported The Daily Beast.

A spokesperson for the Garden Grove Unified School District told the website administrators learned of the incident in March, four months after the video was posted, but declined to say whether any of the students were disciplined.

Continue Reading
 
 

Thank you for whitelisting Raw Story!

As a special thank you, from now until August 31st, we're offering you a discounted rate of $5.99/month to subscribe and get ad-free access. We're honored to have you as a reader. Thank you. :) —Elias, Membership Coordinator
LEARN MORE
close-link
close-image