HOME >> BIOLOGY >> NEWS
New findings confirm male fertility declines with age

Further evidence that men's fertility declines with age is reported today (Thursday 6 February) in Human Reproduction[1] Europe's leading reproductive medicine journal.

A study of 97 healthy non-smoking men aged from 22 to 80 has demonstrated that, as they age, men's semen quality declines. There was a continuous reduction in sperm motility (movement) and semen volume and the proportion of men with abnormal semen volume, sperm concentration and motility increased significantly across the age decades.

The research, from a team in California, confirms that men as well as women have a biological clock even though it may not start ticking as abruptly as women's.

One of the lead researchers, Dr Brenda Eskenazi, Director of the Center for Children's Environmental Health Research at the University of California at Berkeley, said: "We measured semen volume, sperm concentration, sperm motility and progressive motility (the ability of sperm to move forward) in men with no known fertility problems and we found significant age-related decreases in semen quality, most notably for semen volume and sperm motility.

"However, unlike women, there appears to be no evidence of an age threshold, but rather a gradual change over time. Because semen quality is generally considered to be a proxy for fertility our findings suggest that men may become progressively less fertile as they age.

Over a quarter of cases of infertility are known to be due to male factors. Dr Eskenazi, who is Professor of Maternal and Child Health and Epidemiology, said that understanding the effect of male age on fertility had become increasingly significant in public health as a growing number of men are choosing to father children at older ages than in the past. In the USA, for example, the birth rate for fathers aged between 35 and 54 has risen by nearly a quarter since 1980.

Dr. Andrew Wyrobek, head of the Health Effects Genetics Division at Lawrence
'"/>

Contact: Margaret Willson
m.willson@mwcommunications.org.uk
44-153-677-2181
European Society for Human Reproduction and Embryology
5-Feb-2003


Page: 1 2

Related biology news :

1. International study findings link acne-like rash to effectiveness of new targeted cancer treatment
2. Virginia Tech researchers to release findings on Smith River Project
3. New HIV findings
4. Stanford researchers findings may shed light on common, deadly birth defect
5. Briggs takes to the molecular level Darwins findings on plants sensing the direction of light
6. Latest findings on PCBs to be subject of June workshop at Illinois
7. Chlamydia in men now also linked to infertility new findings
8. New MS research shows remarkable findings
9. Scientists findings may lead to better understanding of how that sleep develops, matures
10. New findings are a window into the late stages of Lou Gehrigs disease
11. New findings bring mixed blessings to those looking to combat jet lag

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: New findings confirm male fertility declines with age

(Date:6/25/2015)... 25, 2015 According to ... (Swipe & Area), Technology, Material (Optical Prism, Piezoelectric, ... Security & Others) & Geography - Global Forecast ... said market is expected to reach $14,500.07 Million ... Browse 76 market Tables and 109 ...
(Date:6/25/2015)... , June 25, 2015  TAKE Solutions Ltd., a ... by the United States Patent and Trademark Office (USPTO) ... process leverages TAKE Solutions, Clinical Accelerators to reduce the ... (when compared to standardization without the accelerators), thus reducing ... At the heart of the patented ...
(Date:6/24/2015)... 24, 2015 This report provides market analysis ... six years. It contains an analysis of the drivers, ... their impact from the short, medium, and long term ... industry, market, and technology trends that currently, prevail in ... concerned authorities to efficiently manage the increasing marine traffic ...
Breaking Biology News(10 mins):Fingerprint Sensors Market Worth $14,500.07 Million by 2020 2Fingerprint Sensors Market Worth $14,500.07 Million by 2020 3Fingerprint Sensors Market Worth $14,500.07 Million by 2020 4TAKE Solutions Awarded Patent By USPTO 2Automatic Identification System Market by Class, by Platform, by Application and by Geography - Global Forecasts & Analysis to 2014 - 2020 2
(Date:6/30/2015)... ... June 30, 2015 , ... Cannavoices ... “Cannavoices,” an unprecedented digital video and broadcast initiative. Produced by filmmakers, the multi-platform ... collection of legal medical cannabis stories ever assembled. , Cannavoices profiles Advocates, ...
(Date:6/29/2015)... ... ... The global microfluidics market is expected to grow at ... The market is mainly driven by the rising geriatric population, growing Asian healthcare ... adequate healthcare and research infrastructure in emerging markets, dearth of skilled professionals in ...
(Date:6/29/2015)...  Neuralstem, Inc. (NYSE MKT: CUR), a biopharmaceutical company ... and cell therapy treatments for central nervous system diseases, ... on the NASDAQ Capital Market under the symbol "CUR." ... the NYSE MKT until the market close on July ... expected to commence on July 13, 2015. ...
(Date:6/29/2015)... 29, 2015   For the seventh year running, Across ... their overall digital maturity called the Multichannel Maturometer ... are not maturing fast enough. While it,s true that ... ways overall and customers are increasingly "digital natives", pharma ... customer engagement.  ...
Breaking Biology Technology:Cannavoices Launches a Legal Medical Cannabis Documentary Initiative 2Cannavoices Launches a Legal Medical Cannabis Documentary Initiative 3Microfluidics Market Growing at 19.3% CAGR To 2020 – New research available at ReportsnReports.com 2Microfluidics Market Growing at 19.3% CAGR To 2020 – New research available at ReportsnReports.com 3Microfluidics Market Growing at 19.3% CAGR To 2020 – New research available at ReportsnReports.com 4Microfluidics Market Growing at 19.3% CAGR To 2020 – New research available at ReportsnReports.com 5Neuralstem, Inc. Announces Approval for Listing on the NASDAQ Capital Market 2Neuralstem, Inc. Announces Approval for Listing on the NASDAQ Capital Market 3Results from Digital Maturity Study Show Pharma Lagging 2Results from Digital Maturity Study Show Pharma Lagging 3Results from Digital Maturity Study Show Pharma Lagging 4
Cached News: