Navigation Links
Plastics Chemical BPA Tied to Poor Sperm Quality
Date:10/28/2010

THURSDAY, Oct. 28 (HealthDay News) -- Men with high amounts of the controversial plastics chemical bisphenol-A (BPA) in their urine also tend to have impaired semen quality, a new study of factory workers in China reveals.

The research, funded by the U.S. National Institute of Occupational Safety and Health, found high urine levels of BPA to be significantly associated with a drop in sperm concentration, overall sperm count, sperm vitality and sperm motility.

Although prior work with mice and rats had uncovered troubling associations between BPA exposure and damage to the male reproductive system, the current finding is the first drawn from research involving people.

"Compared with men without detectable urine BPA, those with detectable urine BPA had more than three times the risk of lowered sperm concentration and lower sperm vitality, more than four times the risk of a lower sperm count, and more than twice the risk of lower sperm motility," study lead author Dr. De-Kun Li, a reproductive and perinatal epidemiologist at Kaiser Permanente's Division of Research in Oakland, Calif., said in a news release from the organization.

BPA was not found, however, to have an impact upon either the shape of sperm or its volume, Li noted.

Li and his colleagues report their observations Oct. 28 in the journal Fertility and Sterility.

BPA is commonly found in industrial settings involved in the manufacturing of a wide array of items including baby bottles, plastic containers, food and beverage container linings, and even dental sealants.

Responding to recent reports, in January the U.S. Food and Drug Administration and other U.S. health agencies pledged $30 million toward short- and long-term research aimed at clarifying the health effects of the chemical.

The current report is the third released by Li and his team over the past year. Their first study indicated that exposure to high amounts of BPA in the work environment is linked to a higher risk for impaired sexual function among men, while a second report found evidence that as urine levels of BPA rise, male sexual function dips.

The latest report is based on a five-year study of 218 Chinese factory workers who provided researchers with both urine and semen samples.

Even after accounting for a host of other potentially influential factors, such as smoking and drinking history, chronic disease background, job history, prior exposure to other chemicals and heavy metals, and a prior history of fertility issues, the study authors determined that the association between high BPA urine levels and poor semen quality endured.

Li said his team's work suggests that BPA appears to have a consistent and potent negative impact on male reproductive health.

What's more, the research team said their findings could have implications beyond the factory setting.

"Similar dose-response associations were observed among participants with only environmental BPA exposure at levels comparable to men in the general United States population," Li noted.

But not everyone agreed with that notion.

Steven Hentges is executive director of the Polycarbonate/BPA Global Group with the American Chemistry Council, an industry trade organization based in Arlington, Va. The new findings are "likely to have limited relevance to consumers," he said.

"This study is a little bit lean on details, but what's clear is that it wasn't designed to examine the potential effects of BPA on consumers," Hentges stressed. "It focused on workers. And from what they report we can be sure that some workers were exposed to extraordinarily high amounts of BPA. Thousands of times higher than the average American," he added.

"And in fact, in recent years government agencies around the world have examined the science around BPA, and have concluded that low doses are not a risk to human health," Hentges continued. "The European Food Safety Authority, which is like the FDA in Europe, and whose primary focus with respect to BPA was on reproductive health, released a very comprehensive update on safety issues in September and reaffirmed their previous conclusions that BPA low-dose exposure isn't a risk to human health."

More information

For more on BPA, head to the U.S. National Institute of Environmental Health Sciences.

-- Alan Mozes

SOURCES: Kaiser Permanente, news release, Oct. 28, 2010; Steven Hentges, Ph.D., executive director, Polycarbonate/BPA Global Group, American Chemistry Council, Arlington, Va.


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Why BPA leached from safe plastics may damage health of female offspring
2. Plastics Color Corporation Expands Into California
3. H1N1, Biodegradable Plastics and Nuclear Physics Highlight Research Areas Undertaken During Houghton College's Summer Research Institute
4. Plastics Chemical BPA Tied to Ovarian Cysts
5. Plastics Chemical BPA May Be Tied to Ovarian Cysts
6. Toward safer plastics that lock in potentially harmful plasticizers
7. Chemical tags likely to affect metabolism, cancer development
8. NutriLuxe Offers Personal, At-Home Body Biochemical Balance Test
9. University of Michigan scientists identify chemical in bananas as potent inhibitor of HIV infection
10. Researchers discover chemical that may protect hearts of muscular dystrophy patients
11. SRI International Researchers to Present Work on Early Detection Tool for Neglected Tropical Diseases at 2010 American Chemical Society (ACS) Meeting
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Plastics Chemical BPA Tied to Poor Sperm Quality
(Date:5/4/2016)... Lake Charles, LA (PRWEB) , ... May 04, 2016 , ... ... Lake Charles, LA area has teamed up with Big Brothers Big Sisters of Southwest ... are now being accepted here . , Big Brothers Big Sisters of Southwest ...
(Date:5/4/2016)... ... ... Wellness Center today announced its tenth anniversary of providing a complete approach to health ... to provide a holistic approach to wellness has now become a growing trend of ... Chiropractic Physician , the wellness center offers a complete range of services such as ...
(Date:5/4/2016)... East Providence, Rhode Island (PRWEB) , ... May ... ... website was launched in April 2016. SS&A teamed up with one of the ... website. This legal information portal contains informative legal articles related to the law ...
(Date:5/4/2016)... (PRWEB) , ... May 04, 2016 , ... ... that is transforming breastfeeding for nursing mothers. The company’s patented technology, The Smart ... breastfeeding. Today, the company announced that the technology is now available for purchase ...
(Date:5/4/2016)... Louis, MO (PRWEB) , ... May 04, 2016 , ... ... its newly launched health brand, Verywell, have tapped David Katz, MD, MPH, ... , “Our shared devotion to lifestyle medicine is especially gratifying,” said Katz. ...
Breaking Medicine News(10 mins):
(Date:5/3/2016)... , May 4, 2016 ... across 154 pages, profiling 09 key companies and ... a professional and in-depth study on the current ... basic overview of the industry including definitions, classifications, ... market analysis is provided for the international market ...
(Date:5/3/2016)... Fund to further expand product development, strengthen its disease modeling capabilities and increase market presence. Photo ... ... ... ... Sino-German High-Tech Fund (SGHF) is ...
(Date:5/3/2016)... OSWEGO, Ore. , May 3, 2016 /PRNewswire/ ... endovascular medical technology, today announced Food and Drug ... cardiac resynchronization defibrillator that provides heart failure patients ... scans. Iperia devices also have remote monitoring with ... that adapts the heart rate in response to ...
Breaking Medicine Technology: