Navigation Links
PCBs Might Be Linked to Failed IVF Attempts
Date:2/24/2011

By Steven Reinberg
HealthDay Reporter

THURSDAY, Feb. 24 (HealthDay News) -- Although polychlorinated biphenyls (PCBs) were banned decades ago, they are still pervasive in the United States and may contribute to failed in vitro fertilization (IVF) attempts, a new study suggests.

In fact, PCBs may account for a 40 percent reduced chance of a live birth after IVF, the researchers said.

"These findings may help explain why these chemicals were associated with fertility issues in other studies," said lead researcher John Meeker, an assistant professor of environmental health sciences at the University of Michigan School of Public Health.

Meeker noted that there is not much women can do to avoid PCBs, since they are still found in seafood and dairy foods.

"Levels of PCBs have been declining gradually over the past couple of decades, but when or if these levels reach zero isn't known," he said.

The report is published in the Feb. 24 online issue of Environmental Health Perspectives.

For the study, Meeker's team collected data on IVF attempts of 765 women. In addition, they tested blood samples for 57 different PCBs.

Among these women, 286 gave birth, but 530 lost their babies, the researchers found. Of those who lost their baby, 229 had implantation failures and 301 had miscarriages.

Specifically, Meeker's group looked at blood levels of PCBs called congeners 118, 138 and 153, along with total PCB exposure.

They found that women with the highest levels of PCB 153 and total PCBs had twice the risk of implantation failure, compared with women with the lowest levels.

Moreover, women with the highest levels of these chemicals were 40 percent less likely to give birth, they added.

Meeker's team noted that these data may not apply to couples not using IVF, and may vary due to factors not accounted for in the woman's partner.

Commenting on the study, Dr. George R. Attia, director of the division of reproductive endocrinology and infertility at the University of Miami Miller School of Medicine, said that "I'm not really convinced."

"This study did not show a cause-and-effect relationship between PCBs and these outcomes," he said. "We cannot say it doesn't, but neither can we say PCBs have a cause-and-effect relationship either."

Attia did not say women should not be concerned about PCB exposure, but studies that look for a cause-and-effect relationship are needed to prove the connection between these chemicals and adverse IVF outcomes, he explained.

Although PCBs, which were compounds used in industrial materials, were banned in the United States and other countries in the 1970s, they still persist due to widespread use and resistance to breakdown. Exposure to PCBs occurs mostly through foods and they have been linked with reproductive problems, Meeker said.

More information

For more information on the health effects of PCBs, visit the U.S. Environmental Protection Agency.

SOURCES: John Meeker, Sc.D., assistant professor, environmental health sciences, University of Michigan School of Public Health, Ann Arbor; George R. Attia, M.D., associate professor, clinical obstetrics and gynecology, and director, division of reproductive endocrinology and infertility, University of Miami Miller School of Medicine; Feb. 24, 2011, Environmental Health Perspectives, online


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

Related medicine news :

1. Statins Might Help HIV Patients, Study Suggests
2. Early Childhood Might Affect Love Life in Adult
3. Laser Technology Might Help Doctors Diagnose Melanoma
4. Nitroglycerin Ointment Might Strengthen Bones
5. Speaking Several Languages Might Protect Memory
6. Simple spit and blood tests might detect burnout before it happens
7. Education Might Help Kidney Recipients Spot Skin Cancer
8. That Squeaking Sound Might Come From Your New Hip
9. Using Cell Phones Might Evoke Emotions, Study Suggests
10. Leg Discomfort Might Signal Heart Trouble
11. Diet High in Fiber Might Lengthen Your Life
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
PCBs Might Be Linked to Failed IVF Attempts
(Date:6/26/2016)... , ... June 26, 2016 , ... ... once they have been diagnosed with endometriosis. These women need a treatment plan ... require a comprehensive approach that can help for preservation of fertility and ultimately ...
(Date:6/25/2016)... ... 2016 , ... First Choice Emergency Room , the largest network of ... Medical Director of its new Mesquite-Samuell Farm facility. , “We are pleased to ... said Dr. James M. Muzzarelli, Executive Medical Director of First Choice Emergency Room. ...
(Date:6/24/2016)... Los Angeles, CA (PRWEB) , ... June 24, 2016 , ... ... plastic surgery procedures that most people are unfamiliar with. The article goes on to ... known procedures, but also many of these less common operations such as calf and ...
(Date:6/24/2016)... MIAMI, Fla. (PRWEB) , ... June 24, 2016 , ... ... Florida Trend magazine’s 2016 Legal Elite. The attorneys chosen by their peers for this ... of Florida. , Seven Greenberg Traurig Shareholders received special honors as members of this ...
(Date:6/24/2016)... ... June 24, 2016 , ... ... the Clinical Decision Making in Emergency Medicine conference in Ponte Vedra Beach, FL. ... articles published in Emergency Medicine Practice and Pediatric Emergency Medicine Practice. ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016 Research and ... Global Market - Forecast to 2022" report to their ... treatment method for the patients with kidney failure, it replaces ... fluid from the patient,s blood and thus the treatment helps ... and chloride in balance. Increasing number of ...
(Date:6/23/2016)... , June 23, 2016 Roche (SIX: ... 510(k) clearance for its Elecsys BRAHMS PCT (procalcitonin) assay ... sepsis or septic shock. With this clearance, Roche is ... a fully integrated solution for sepsis risk assessment and ... with bacterial infection and PCT levels in blood can ...
(Date:6/23/2016)... -- Bracket , a leading clinical trial technology and ... platform, Bracket eCOA (SM) 6.0, at the 52 nd ... 2016 in Philadelphia , Pennsylvania.  A demonstration ... of its kind to fully integrate with RTSM, will be ... is a flexible platform for electronic clinical outcomes assessments that ...
Breaking Medicine Technology: