Health Care

Sperm counts in Western countries plunge more than 50% in 40 years

Sperm counts in Western countries plunge more than 50% in 40 years”

Researchers from Hebrew University have found that sperm concentration and total sperm count has significantly and steadily declined in Western men.

The black lines in this graphic from the study show the decline in sperm concentration and total sperm count among men in Western countries between 1973 and 2011.

"These findings have wide implications for public health", said Dr. Hagai Levine, head of the environmental health track at the Hebrew University of Jerusalem.

The quality of sperm from men in North America, Europe and Australia has declined dramatically over the past 40 years with a 52.4 percent drop in sperm concentration, according to a study published Tuesday.

This study did not examine causes of the decline, but it has previously been linked to environmental and lifestyle factors, such as exposure to chemicals and increased rates of obesity in Western countries.

The study did not explain why sperm counts might be down in this group of men, but there are several theories based on prior research performed by the study authors and other groups.

Prof Richard Sharpe, from the MRC Centre for Reproductive Health at Edinburgh University, said more than 15 per cent of young men in Britain now have a low sperm count.

"The message is not new and we have suspected this decline for many years".

The review of previous research was created to measure the extent to which sperm count numbers have fallen, not to identify the cause of these dropping counts.

"We should solve this by addressing the root causes, whether by regulation of chemicals or health promotion in the broad sense to improve diet and physical activity or tobacco control", says Levine.

As the most conclusive piece of research on sperm count to date, the study puts to rest numerous questions that have arisen about the trend in recent decades. The combination of these two factors may have caused sperm counts to be overestimated, resulting in the current startling low sperm count measurements.

They also had 32 per cent fewer swimmers that were normally formed.

"Are we exposing ourselves to. environmental components that are toxic to sperm?".

Humans could face extinction if sperm counts continue to drop as fast as they have done in the last four decades in Western countries, a study warns.

He pointed out that there has been concern about plastic materials containing BPA-disrupting hormones.

"It shows the decline is strong and that the decline is continuing, " Swan said in an interview. We also need local knowledge regarding exposure and effects. "The fact that the decline is seen in Western countries strongly suggests that chemicals in the environment are playing a causal role in this trend", added Swan. And for the growing number of couple who can't conceive, this is already a serious problem.

"If you look at this over the next 20 or 30 years, the average sperm count could drop to the point where people are troubled", Goldfarb told Healthline.

"This is a sign, like a canary in a coal mine", Levine said in a phone interview with The Times of Israel.

Sperm count is the best measure of male fertility, and lead author Dr Hagai Levine said the findings are an "urgent wake-up call" to investigate lifestyle factors, chemicals and environment that could cause the human species to go extinct. "Is this a reflection of something else that's happening, and this is just basically a marker for some other health concern that's going on with men?"



Like this

loading...
loading...

Latest


26 July 2017
Vedanta Q1 consolidated profit more than doubles
The stock closed up 3.7 percent at 274.25 rupees on the National Stock Exchange. Vedanta's gross debt stood at ₹67,342 crore and net debt was at ₹19, 024 crore.

26 July 2017
Sirius given another chance after court ruling
Maya Demetriou, 90, a resident in the Sirius building , addressing the media outside the Land and Environment Court in Sydney. Save Our Sirius chairperson Shaun Carter said it was a good day for the building, the local community and the whole of NSW.

26 July 2017
Hugo Lloris 'frustrated' by Tottenham's recent performances in Europe
That's what you get with a homegrown player and that's why people love Harry Kane and sing that he's one of our own". Tottenham stopper Hugo Lloris admits he has been frustrated with his team's performances in European competitions.

26 July 2017
Tottenham keen on Hoffenheim defender Jeremy Toljan
His wages would not be a problem for Tottenham and it is said that he would prefer to move to the Premier League over Portugal.

26 July 2017
Ivanka Trump's Attempt To Quote Albert Einstein Backfires Spectacularly
Sing like no one is listening. "Love like you've never been hurt and live like it's heaven on earth.' - Pol Pot", wrote one user. It wasn't the only misattributed quote from the Trump administration that was discovered just this past weekend.

26 July 2017
Canadian National Railway Company (TSX:CNR): Immense Growth Potential?
Renaissance Technologies LLC boosted its stake in Canadian Pacific Railway Limited by 77.5% in the first quarter. The average estimate of 10 analysts surveyed by Zacks Investment Research was also for earnings of $1 per share.

26 July 2017
18-Year-Old Accused of Burying Baby Alive
Investigators are waiting on a final report from the county coroner's office about how the infant died. Authorities on Monday were back at the Carlisle house where a baby's remains were found.

26 July 2017
Senate to vote on health care bill amid confusion
That's because if republicans called a straight up and down vote on repealing the Affordable Care Act right now, they would lose. This is problematic for all those republicans in congress who ran on a platform of repealing and replacing Obamacare.

26 July 2017
Mike Vick is Andy Reid and the Chiefs' newest coaching intern
You can listen here . "Yeah, well, he just wanted to get my thoughts, but we haven't talked about it since", Vick said then. This won't be the first time Vick and Reid have worked together.

26 July 2017
Invesco Trust for Investment Grade New York Municipal
Zacks Investment Research cut Government Properties Income Trust from a "buy" rating to a "hold" rating in a report on Monday. Consequently Government Properties Income Trust (NASDAQ:GOV)'s weekly and monthly volatility is 1.64%, 2.21% respectively.