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:


(Date:4/18/2017)... 18, 2017  Socionext Inc., a global expert in SoC-based imaging ... server, the M820, which features the company,s hybrid codec technology. A ... Tera Probe, Inc., will be showcased during the upcoming Medtec Japan ... at the Las Vegas Convention Center April ... Click here for ...
(Date:4/11/2017)... 11, 2017 Crossmatch®, a globally-recognized leader ... today announced that it has been awarded a ... Activity (IARPA) to develop next-generation Presentation Attack Detection ... "Innovation has been a driving force within Crossmatch ... allow us to innovate and develop new technologies ...
(Date:4/6/2017)... , April 6, 2017 ... RFID, ANPR, Document Readers, by End-Use (Transportation & Logistics, ... Facility, Oil, Gas & Fossil Generation Facility, Nuclear Power), ... Educational, Other) Are you looking for a ... sector? ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... ... October 10, 2017 , ... San Diego-based team building and cooking events company, ... today. The bold new look is part of a transformation to increase awareness, ... significant growth period. , It will also expand its service offering from its signature ...
(Date:10/10/2017)... Oct. 10, 2017 SomaGenics announced the receipt ... to develop RealSeq®-SC (Single Cell), expected to be the ... RNAs (including microRNAs) from single cells using NGS methods. ... need to accelerate development of approaches to analyze the ... "New techniques for measuring levels of mRNAs in ...
(Date:10/9/2017)... (PRWEB) , ... October 09, 2017 , ... At its ... Dr. Christopher Stubbs, a professor in Harvard University’s Departments of Physics and Astronomy, has ... was a member of the winning team for the 2015 Breakthrough Prize in Fundamental ...
(Date:10/7/2017)... Mass. , Oct. 6, 2017  The ... work of three scientists, Jacques Dubochet, Joachim ... breakthrough developments in cryo-electron microscopy (cryo-EM) ... technology within the structural biology community. The winners ... Scientists can now routinely produce highly resolved, three-dimensional ...
Breaking Biology Technology:
Cached News: