News / Health

Pesticide Suspected in Rising Food-Allergy Cases

Tap water (file photo)Tap water (file photo)
x
Tap water (file photo)
Tap water (file photo)
Jessica Berman
Food allergies are on the rise globally, and a new report says the culprit could be increasing worldwide exposure to dichlorophenols, chemicals used in agricultural pest-killers and in the chlorine used to disinfect drinking water.  
 
According to the U.S. Centers for Disease Control and Prevention, allergies to foods such as milk, wheat, peanuts, soy and shellfish shot up 18 percent in the United States between 1997 and 2007. 
 
Other studies have shown that environmental pollution is on the rise. Researchers at the Albert Einstein College of Medicine in New York suggest there is a link between the two trends.
 
They analyzed health data from the 2005-2006 U.S. National Health and Nutrition Examination Survey, in which more than 10,000 Americans took part. The researchers identified more than 2,500 individuals with measurable levels of dichlorophenols — chemicals found in pesticides and chlorinated water — in their urine. The study team, led by allergist and immunologist Elina Jerschow, narrowed their sample down to 2,200. Out of this group, Jerschow says, 411 of the subjects had some sort of food allergy.
 
“People who had high levels of dichlorophenols were about 80 percent more likely to have allergic sensitization to foods than people who had low levels of dichlorophenols in the urine," she said.
 
The team found that more than a thousand of the participants had an environmental allergy that was not linked to the chemicals.
 
There’s evidence that people with protected immune systems, which have not been challenged by foreign substances, are ultimately more likely to develop allergies. Jerschow thinks that may help explain her study's findings.
 
“If you think about people who have a lot of allergies, they may be particularly prone to keep the environment specifically clean," she said. "And so they may use more bactericidal agents and more insecticides and pesticides and that’s how they can have more levels of dichlorophenols.”
 
People are exposed to dichlorophenols not only through tap water, but handling fruits and vegetables, according to Jerschow, who says pesticide residues on farm produce may be a greater source of exposure to the chemicals than tap water.
 
Allergic reactions from food range from a mild rash to anaphylaxis, a systemic reaction that can lead to death within a few minutes.
 
An article by Elina Jerschow and colleagues on food allergies and dichlorophenols is published in the Annals of Allergy, Asthma and Immunology.

You May Like

Video Iran Nuclear Deal Becomes US Campaign Issue

Voters in three crucial battleground states - Florida, Ohio and Pennsylvania - overwhelmingly oppose nuclear deal with Iran More

With IS in Coalition Cross-Hairs, al-Qaida's Syria Affiliate Reemerges

Jabhat al-Nusra has rebounded, increasingly casting itself as a critical player in battle for Syria’s future More

Lessons Learned From Katrina, 10 Years Later

FEMA chief Craig Fugate says key changes include better preparation, improved coordination among state, federal assistance agencies More

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Colombians Flee Venezuela as Border Crisis Escalatesi
X
August 27, 2015 2:08 AM
Hundreds of Colombians have fled Venezuela since last week, amid an escalating border crisis between the two countries. Last week, Venezuelan President Nicolas Maduro ordered the closure of a key border crossing after smugglers injured three Venezuelan soldiers and a civilian. The president also ordered the deportation of Colombians who are in Venezuela illegally. Zlatica Hoke reports.
Video

Video Colombians Flee Venezuela as Border Crisis Escalates

Hundreds of Colombians have fled Venezuela since last week, amid an escalating border crisis between the two countries. Last week, Venezuelan President Nicolas Maduro ordered the closure of a key border crossing after smugglers injured three Venezuelan soldiers and a civilian. The president also ordered the deportation of Colombians who are in Venezuela illegally. Zlatica Hoke reports.
Video

Video Is China's Economic Data Accurate?

Some investors say China's wild stock market gyrations have been made worse by worries about the reliability of that nation's economic data. And some critics say the reports can mislead investors by painting an unrealistically-strong picture of the economy. A key China scholar says Beijing is not fudging ((manipulating)) the numbers, but that the economy is evolving quickly from smoke-stack industries to services, and the ways of tracking new economic activity are falling behind the change. V
Video

Video Next to Iran, Climate at Forefront of Obama Agenda

President Barack Obama this week announced new initiatives aimed at making it easier for Americans to access renewable energy sources such as solar and wind. Obama is not slowing down when it comes to pushing through climate change measures, an issue he says is the greatest threat to the country’s national security. VOA correspondent Aru Pande has more from the White House.
Video

Video Shipping Containers Provide Experimental Housing

Housing prices around the San Francisco Bay area are out of reach for many people, so some young entrepreneurs, artists and tech industry workers are creating their own houses using converted shipping containers. But as VOA's Mike O’Sullivan reports from Oakland, the effort requires ingenuity and dealing with restrictive local laws.
Video

Video Arctic Draws International Competition for Oil

A new geopolitical “Great Game” is underway in earth’s northernmost region, the Arctic, where Russia has claimed a large area for resource development and President Barack Obama recently approved Shell Oil Company’s test-drilling project in an area under U.S. control. Greg Flakus reports.
Video

Video Philippine Maritime Police: Chinese Fishermen a Threat to Country’s Security

China and the Philippines both claim maritime rights in the South China Sea.  That includes the right to fish in those waters. Jason Strother reports on how the Philippines is catching Chinese nationals it says are illegal poachers. He has the story from Palawan province.
Video

Video Technique May Eliminate Drill-and-Fill Dental Care

Many people dread visiting dentists because they're afraid of drills. Now, however, a technology developed by a British firm promises to eliminate the need for mechanical cleaning of dental cavities by speeding a natural process of tooth repair. VOA’s George Putic reports.
Video

Video China's Spratly Island Building Said to Light Up the Night 'Like A City'

Southeast Asian countries claim China has illegally seized territory in the Spratly islands. It is especially a concern for a Philippine mayor who says Beijing is occupying parts of his municipality. Jason Strother reports from the capital of Palawan province, Puerto Princesa.
Video

Video Ages-old Ice Reveals Secrets of Climate Change

Ice caps don't just exist at the world's poles. There are also tropical ice caps, and the largest sits atop the Peruvian Andes - but it is melting, quickly, and may be gone within the next 20 years. George Putic reports scientists are now rushing to take samples to get at the valuable information about climate change locked in the ice.
Video

Video French Experiment in Integrating Roma Under Threat

Plans to destroy France’s oldest slum have sparked an outcry on the part of its Roma residents. As Lisa Bryant reports from the Paris suburb of La Courneuve, rights groups argue the community is a fledgling experiment on integrating Roma who are often outcasts in many parts of Europe.
Video

Video Kenyans Turn to Agriculture for Business

Each year Kenyan universities continue to churn out graduates for the job market despite the already existing high rate of unemployment among youth in the country. Some of these young men and women have realized that agriculture can be as rewarding as any other business or job, and they are resorting to agribusiness in large numbers as a way of tackling unemployment. Rael Ombuor reports for VOA.
Video

Video First Women Graduate Elite Army Ranger School

Two women are making history for the U.S. Army by proving they are among the toughest of the tough. VOA's Carla Babb reports from Fort Benning, Georgia as 94 men and those two women rise as graduates of the difficult Ranger school.

VOA Blogs