HOME >> BIOLOGY >> NEWS
Maternal beef diet could impact sperm counts, UR study suggests

A mothers high beef consumption while pregnant was associated with lower sperm counts in her son, according to a study led by researchers at the University of Rochester.

Researchers sought to examine the relationship between semen quality and long-term risks from growth hormones and other chemicals in beef. While the study results revealed a significant link between the lowest sperm counts and mothers who were the highest beef consumers (seven or more beef meals per week), researchers could not pinpoint hormones, pesticides or other environmental chemicals in the animal fat as a direct cause.

"What were really doing here is raising an issue," said Shanna H. Swan, Ph.D., director of the Center for Reproductive Epidemiology at the University of Rochester Medical Center and lead author of the study. "The average sperm concentration of the men in our study went down as their mothers beef intake went up. But this needs to be followed carefully before we can draw any conclusions."

The study is being published March 28 in the journal Human Reproduction.

Its important to note that all of the 387 men in the study were able to conceive a child without medical assistance, so although sperm counts were low in some cases none of the men were actually infertile. Yet among the 51 men whose mothers were the highest beef eaters, almost 18 percent had sperm counts classified by the World Health Organization as "sub-fertile" (20 mill/ml or lower). By comparison, sperm concentrations were 24 percent higher for men whose mothers ate less beef, and only about 5 percent had sperm counts that could be classified as sub-fertile.

The concern, Swan said, is that high beef consumption by pregnant women may alter sperm production of the male fetus in utero, particularly at the end of the first trimester during the critical period for testicular development. Although sperm production occurs in stages -- prenatal, during puberty, and into adult
'"/>

Contact: Leslie Orr
Leslie_Orr@urmc.rochester.edu
585-275-5774
University of Rochester Medical Center
27-Mar-2007


Page: 1 2 3

Related biology news :

1. Maternal seafood consumption benefits childrens development
2. Maternal alcohol use increases the risk of newborn infections
3. Newly created cancer stem cells could aid breast cancer research
4. New system of wastewater treatment could reduce the size of treatment plants by half
5. Discovery of new protein could provide new understanding of male fertility
6. Einstein researchers prototype vaccine could provide improved protection against tuberculosis
7. How a pain in the neck could be bad for your blood pressure
8. Synchrotron could help save the Tassie devil
9. Pets could be source of multiresistant bacteria infections in humans, MU researchers investigate
10. Fish eyes could hold clue to repairing damaged retinas in humans
11. New aerogels could clean contaminated water, purify hydrogen for fuel cells

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:7/20/2017)... DAL ) customers now can use fingerprints instead of their boarding ... ... biometrics to board aircraft at Reagan Washington National Airport ... Delta,s biometric boarding pass experience that launched in May at the ... to allow eligible Delta SkyMiles Members who are enrolled in CLEAR to ...
(Date:6/14/2017)... IBM ) is introducing several innovative partner startups at VivaTech ... startups and global businesses, taking place in Paris ... will showcase the solutions they have built with IBM Watson ... France is one of the most dynamic ... in the number of startups created between 2012 and 2015*, ...
(Date:5/16/2017)... , May 16, 2017   Bridge Patient ... organizations, and MD EMR Systems , an ... partner for GE, have established a partnership to ... product and the GE Centricity™ products, including Centricity ... These new integrations will allow ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... 11, 2017 , ... Proscia Inc ., a data ... titled, “Pathology is going digital. Is your lab ready?” with Dr. Nicolas Cacciabeve, ... and how Proscia improves lab economics and realizes an increase in diagnostic confidence.* ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... implantation and pregnancy rates in frozen and fresh in vitro fertilization (IVF) ... and maternal age to IVF success. , After comparing the results from the ...
(Date:10/10/2017)... , ... October 10, 2017 , ... ... Center’s FirstHand program has won a US2020 STEM Mentoring Award. Representatives of the ... for Excellence in Volunteer Experience from US2020. , US2020’s mission is to change ...
(Date:10/10/2017)... ... 10, 2017 , ... USDM Life Sciences , the ... sciences and healthcare industries, announces a presentation by Subbu Viswanathan and Jennifer Jaye ... GxP Validation for Agile Cloud Platforms,” will present a revolutionary approach to achieving ...
Breaking Biology Technology:
Cached News: