Navigation Links
Smog Exposure During Pregnancy Might Raise Child's Cancer Risk: Study

By Steven Reinberg
HealthDay Reporter

TUESDAY, April 9 (HealthDay News) -- Exposure to air pollution during pregnancy and the first year of life might increase the likelihood of developing certain childhood cancers, California researchers say.

Researchers from the University of California, Los Angeles School of Public Health collected data on children diagnosed with cancer before the age of 6 and local traffic exposure. The greater the traffic pollution, the higher the odds for acute lymphoblastic leukemia (white blood cell cancer), germ cell tumors (cancers of the testicles, ovaries and other organs) and eye cancer, they found.

These findings do not mean pollution actually causes these cancers, said lead researcher Julia Heck, an assistant researcher in the department of epidemiology. "This finding is an association, because nothing is proven yet," she said.

But the results do suggest that exposure to traffic pollution might increase risk for childhood cancers, Heck added. "Since this was the first study to report risks for these [uncommon childhood] cancers, these findings need to be confirmed in other studies," she said.

Areas of California are known for their unhealthy air. The state's topography and its warm, sunny climate tend to form and trap air pollutants, creating smog, according to the California Air Resources Board.

The researchers focused on pregnancy because certain cancers originate in the womb, Heck said.

But women shouldn't worry about their baby's risk for cancer based on this study, another expert said.

"There has been an association between air pollution and other diseases," said Dr. Rubin Cohen, director of the Adult Cystic Fibrosis and Bronchiectasis Center at the Long Island Jewish Medical Center in New Hyde Park, N.Y. "We know that pollution causes asthma, and that is probably more real than the cancer issue."

Cohen isn't sure the association between pollution and childhood cancers is causal, and he said there isn't much one can do about it anyway. "Moving is easier said than done," he said.

The study findings were scheduled for presentation Tuesday at the annual meeting of the American Association for Cancer Research in Washington, D.C.

For the study, Heck's team collected data on nearly 3,600 children under 6 years old who were born between 1998 and 2007 and listed in the California Cancer Registry. The researchers compared them with a similar number of healthy children.

The researchers were able to estimate the amount of traffic pollution at each child's home during the mother's pregnancy and the child's first year of life. The estimates included exposure to gas and diesel engines as well as traffic volume, emission rates and weather.

Based on their findings, Heck's group concluded the risk for cancer was increased with higher exposure to vehicular air pollution. "In terms of the risk, greater exposure was associated with a 5 percent increase in [acute lymphoblastic leukemia] cancers, an 11 percent increase in eye cancer and a 15 percent increase in testicle, ovary and other organ tumors," Heck said.

But whether any particular period is critical during pregnancy or the child's first year wasn't clear.

Another expert agreed that more research is needed before conclusions can be drawn about any actual risk for cancer from traffic pollution.

The study needs to be replicated to see if the same findings are seen in other cities, said Dr. Guillermo DeAngulo, a pediatric oncologist at Miami Children's Hospital, in Florida.

"There has been a concern about environmental factors playing a role in cancers," said DeAngulo, who was not involved in the study. "The question is how much of a role they play."

Genetic components also may be involved that may make cancer more likely for some of these children, he said.

Data and conclusions presented at meetings are typically considered preliminary until published in a peer-reviewed medical journal.

More information

For more information on air pollution, visit the U.S. National Library of Medicine.

SOURCES: Julia Heck, Ph.D., assistant researcher, department of epidemiology, University of California, Los Angeles, School of Public Health; Guillermo DeAngulo, M.D., pediatric oncologist, Miami Children's Hospital; Rubin Cohen, M.D., director, Adult Cystic Fibrosis and Bronchiectasis Center, Long Island Jewish Medical Center, New Hyde Park, N.Y.; April 9, 2013, presentation, American Association for Cancer Research annual meeting, Washington, D.C.

Copyright©2012 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Mercury Exposure Linked to Raised Diabetes Risk
2. Office Workers May Face Exposure to Flame Retardant
3. Lung Cancer Asbestos Victims Center Now Urges US Navy Veterans With Lung Cancer To Call Them If They Had Heavy Exposure To Asbestos On A US Navy Ship
4. Lung Cancer Asbestos Victims Center Now Urges Families To Help Them Identify A Nonsmoker Loved One Who Had Exposure To Asbestos In The Workplace And Now Has Lung Cancer
5. Lung Cancer Asbestos Victims Center Now Urges All Industrial Workers Who Had Exposure to Asbestos at Work and Now Have Lung Cancer to Call Them About Possible Compensation
6. Secondhand smoke exposure linked to signs of heart disease
7. Lung Cancer Asbestos Victims Center Urges Non Smokers Who Now Have Lung Cancer To Contact Them If They Had Exposure To Asbestos At Work-Possible Significant Compensation
8. Small molecules in the blood might gauge radiation effects after exposure
9. Early Exposure to Gluten May Help Babies Avoid Celiac Risk: Study
10. Exposure to Smog in Early Pregnancy Linked to Complications
11. Smog Exposure During Pregnancy Tied to Tinier Babies
Post Your Comments:
Related Image:
Smog Exposure During Pregnancy Might Raise Child's Cancer Risk: Study
(Date:11/25/2015)... ... 2015 , ... The McHenry County law firm of Botto Gilbert Lancaster, ... Francisco J. Botto and Alex C. Wimmer. Attorneys Botto and Wimmer represented the claimant ... (2d) 130884WC. , According to court documents, Adcock testified that on May 10, 2010 ...
(Date:11/25/2015)... ... November 25, 2015 , ... SCOTTSDALE, AZ) - Today, ... specializing in both surgical and non-surgical treatments, announced the expansion of his private ... Plastic Surgery. , Highly trained and nationally recognized for his natural approach, ...
(Date:11/25/2015)... ... November 25, 2015 , ... In an ongoing Clinical ... Center (RMC) in Chicago, IL, UV Angel is evaluating the efficacy of its product ... intensive care units (totaling 30 beds) from May 2014 through October 2015 at a ...
(Date:11/25/2015)... , ... November 25, 2015 , ... ... provide scholarships for people struggling with eating disorders as a result of the ... second annual event, held at Fox Run Golf Club in Eureka, will help ...
(Date:11/25/2015)... ... November 25, 2015 , ... ... that it has undertaken significant expansion of its current state of the art ... part of PharmaTech’s strategy to increase its manufacturing capacity as well as to ...
Breaking Medicine News(10 mins):
(Date:11/25/2015)... 25, 2015  Amgen (NASDAQ: AMGN ) today ... with the United States (U.S.) ... biosimilar candidate to Humira ® (adalimumab). Amgen believes ... to the FDA and represents Amgen,s first BLA submission ... Harper , M.D., executive vice president of Research and ...
(Date:11/25/2015)... , Nov. 25, 2015 AAIPharma Services ... investment of at least $15.8  Million to expand ... Wilmington, NC . The expansion will provide ... meet the growing demands of the pharmaceutical and ... site expansion will provide up to 40,000 square ...
(Date:11/25/2015)...  Henry Schein, Inc., the world,s largest provider of ... and animal health practitioners, will unveil at the Greater ... ConnectDental® Pavilion , which brings together for the first ... to help any practice or laboratory enter the digital ... schedule of experts appearing at the Pavilion. --> ...
Breaking Medicine Technology: