Featured Research

from universities, journals, and other organizations

Semen quality of young men in south-east Spain down by 38 percent in the last decade

Date:
January 18, 2013
Source:
Plataforma SINC
Summary:
The first comparative study on the evolution of sperm quality in young Spanish men over ten years reveals that spermatozoid concentration in men between 18 and 23 years in the regions of Murcia and Almeria has dropped by an annual average of two percent.

A concentration of lower than 40 million/ml makes it more difficult to conceive.
Credit: SINC

The first comparative study on the evolution of sperm quality in young Spanish men over ten years, headed by researchers at the University of Murcia, reveals that spermatozoid concentration in men between 18 and 23 years in the regions of Murcia and Almeria has dropped by an annual average of 2%.

The suspicion that the semen of Spanish men is losing quality now takes force in the case of young men from Murcia and Almeria.

The journal Andrology has published a multidisciplinary and international study, headed by the Department of Preventative Medicine and Public Health of the University of Murcia (UMU), which demonstrates that "total sperm count and concentration has declined amongst young men in the south-east of Spain in the last decade." More specifically, the decrease amounts to 38%.

The lead researcher, Alberto Torres Cantero, explained that the study involved "comparing the results obtained by the Medical Research Centre of the University of Granada from the semen of 273 men from Almeria between 18 and 23 years, collected between 2001 and 2002, with those samples collected ten years later by 215 undergraduates from Murcia, all the while ensuring that both sample groups had the same age range and similar characteristics."

The analysis shows that the number of spermatozoids is significantly lower in the subjects from Murcia compared to the participants from Almeria. Average concentration goes from 72 million spermatozoids per millilitre in 2011 to 52 million/ml in 2011, according to Torres Cantero, professor of Preventative Medicine and Public Health at UMU.

Another relevant result is that "40% of those university students analysed in Murcia suffered from alterations in at least one semen parameter (morphology, mobility). Furthermore, all sperm indicators are below the norm in 15% of the sample," states Jaime Mendiola, professor at the UMU and first signatory of the study.

Clinic trails are needed

"Before there were no well performed studies to detect a change in sperm quality in Spain," explains Torres. Its main limitation is that it only makes reference to one geographic area and cannot be extrapolated: "We do not know if the same has occurred in other parts of Spain," outlines the researcher. There is little likelihood that the study will be carried out in other regions "because there are no similar semen quality studies in the young and healthy population."

Nonetheless, the fact that semen has worsened does not necessarily mean that the number of infertile men has increased. As Torres clarifies, this study measures semen quality and not fertility, "for which specific criteria established by the WHO are used."

Despite this, Mendiola feels that these data are worrying because "it has been verified in recognised studies that a concentration lower than 40 million/ml makes conception more difficult. If the rate of loss we have outlines continues, with an average decline in quality of 2% per year, the sperm of young men could reach this danger level of 40 million/ml in a very short space of time."

For this reason, the authors stress the urgency to promote "clinical trails that identify effective prevention actions for counteracting this negative trend via lifestyle changes."

"We believe that some prevention actions involving lifestyle improvements, such as a healthier diet, could increase sperm quality," outlines Alberto Torres. "But we still lack rigorous scientific information to propose them neither in the clinical field nor at a population level. If we could identify those actions, we could improve sperm quality."


Story Source:

The above story is based on materials provided by Plataforma SINC. Note: Materials may be edited for content and length.


Journal Reference:

  1. Jaime Mendiola, Niels Jørgensen, Lidia Mínguez-Alarcón, Laura Sarabia-Cos, José J. López-Espín, Guillermo Vivero-Salmerón, Karen J. Ruiz-Ruiz, Mariana F. Fernández, Nicolás Olea, Shanna H. Swan, Alberto M. Torres-Cantero. Sperm counts may have declined in young university students in Southern Spain. Andrology, 2013; DOI: 10.1111/j.2047-2927.2012.00058.x

Cite This Page:

Plataforma SINC. "Semen quality of young men in south-east Spain down by 38 percent in the last decade." ScienceDaily. ScienceDaily, 18 January 2013. <www.sciencedaily.com/releases/2013/01/130118111704.htm>.
Plataforma SINC. (2013, January 18). Semen quality of young men in south-east Spain down by 38 percent in the last decade. ScienceDaily. Retrieved April 16, 2014 from www.sciencedaily.com/releases/2013/01/130118111704.htm
Plataforma SINC. "Semen quality of young men in south-east Spain down by 38 percent in the last decade." ScienceDaily. www.sciencedaily.com/releases/2013/01/130118111704.htm (accessed April 16, 2014).

Share This



More Health & Medicine News

Wednesday, April 16, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Could Even Casual Marijuana Use Alter Your Brain?

Could Even Casual Marijuana Use Alter Your Brain?

Newsy (Apr. 16, 2014) — A new study conducted by researchers at Northwestern and Harvard suggests even casual marijuana use can alter your brain. Video provided by Newsy
Powered by NewsLook.com
Formerly Conjoined Twins Released From Dallas Hospital

Formerly Conjoined Twins Released From Dallas Hospital

Newsy (Apr. 16, 2014) — Conjoined twins Emmett and Owen Ezell were separated by doctors in August. Now, nearly nine months later, they're being released from the hospital. Video provided by Newsy
Powered by NewsLook.com
Ebola Outbreak Now Linked To 121 Deaths

Ebola Outbreak Now Linked To 121 Deaths

Newsy (Apr. 15, 2014) — The ebola virus outbreak in West Africa is now linked to 121 deaths. Health officials fear the virus will continue to spread in urban areas. Video provided by Newsy
Powered by NewsLook.com
Cognitive Function: Is It All Downhill From Age 24?

Cognitive Function: Is It All Downhill From Age 24?

Newsy (Apr. 15, 2014) — A new study out of Canada says cognitive motor performance begins deteriorating around age 24. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins