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Pesticides Exp : Children Are Exposed To Pesticides
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 Message 1 of 3 in Discussion 
From: Rene  (Original Message)Sent: 12/1/2006 1:19 AM

 

Study Finds Children Are Exposed To Pesticides
A University of Washington study suggests that pesticides are finding their way into the bodies of pre-school children in agricultural communities at a higher level than previously thought.

More than half of the tested children of farm workers who live in Douglas and Chelan counties in Washington state were exposed during the spraying season to pesticide levels that exceeded federal safety levels, according to UW researchers. That's even though the children themselves do not work in the fields.

These levels were estimated from concentrations of pesticide breakdown products in urine, and compared to reference values established by the U.S. Environmental Protection Agency (EPA) and the World Health Organization. Doses were evaluated by assuming that breakdown products were attributable to either azinphos-methyl or phosmet, the two organophosphate pesticides used most frequently in the region.

Of children in the sample group, 56 percent had test results that indicated that exposures to azinphos-methyl, a chemical used to treat apple orchards, might exceed federal levels. The rate of higher exposure among children who lived more than a quarter mile from orchards, and whose parents were not farm workers, was 44 percent.

Researchers found different results when the exposures were attributed to phosmet, a less toxic chemical sometimes used as an alternative to azinphos-methyl. Only 9 percent of the farmworker children had test results suggesting that federal safety guidelines for phosmet might have been exceeded; none of the neighbor children did.

It's not known how and if these exposures are affecting children's health. The study concludes that regulators need to look at exposure standards and determine if they are appropriate, says one of the study authors, Richard Fenske, a professor of environmental health in UW's School of Public Health and Community Medicine. He is also director of UW's Pacific Northwest Agricultural Safety and Health Center.

Of the sample group, 91 children came from households with pesticide applicators or field-based workers; 18 children came from households with no direct link to agriculture. Researchers gathered urine samples during the spring and summer when apple orchards in the area are sprayed to attack coddling moth, the primary insect pest for apples in the region. "Exposures may have been higher at this time of year, and were probably the result of both direct exposure to pesticides and to pesticide residues in food," Fenske said.

The study by Fenske and colleagues will be published in the June issue of Environmental Health Perspectives. This journal is published by the National Institute of Environmental Health Sciences, one of the National Institutes of Health.

The EPA is in the midst of setting safety standards, specifically for children, for thousands of uses of chemicals. The pesticides involved in the UW study are organophosphates, a common class of pesticides that the EPA has targeted in its first efforts to implement tighter safety levels under a 1996 law.

Gauging children's aggregate exposure and cumulative risk to those pesticides is a tremendous task. There is considerable discussion about the best way to monitor exposure among children. Fenske and colleagues write that biological monitoring -- including the use of urine samples -- appears to be one useful component of an effective assessment program.

###

Other authors of the study include John C. Kissel, associate professor of environmental health; Chensheng Lu, research scientist in environmental health; David A. Kalman, professor and chair of environmental health; Nancy J. Simcox, research industrial hygienist; Emily H. Allen, research industrial hygienist; and Dr. Matthew C. Keifer, associate professor of medicine and environmental health.

 Source: University Of Washington, Date: April 25, 2000,   http://www.sciencedaily.com
 



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 Message 2 of 3 in Discussion 
From: ReneSent: 12/1/2006 1:25 AM


 

Children Are Facing High Risks From Pesticide Poisoning
GENEVA (24 SEPTEMBER 2004) -- Children are facing higher risks from pesticides than adults and need greater protection against these chemicals, particularly in developing countries, according to a joint report published by the UN Food and Agriculture Organization (FAO), the UN Environment Programme (UNEP) and the World Health Organization (WHO).

Pesticide poisoning is a serious health problem that disproportionately affects infants and children, the UN report, called "Child Pesticide Poisoning: Information for Advocacy and Action" and issued this week in Geneva, said. The number of children affected is unknown but, based on the experience of many countries, likely to be large. The report highlights both the magnitude of the problem and the need to put more efforts into better reaching and helping the rural, disadvantaged populations who are most affected by pesticide poisoning.

Pesticide poisoning

It has been reported that an estimated one million to five million cases of pesticide poisonings occur every year, resulting in several thousands of fatalities, including children, the report said.

"Most of the poisonings take place in rural areas of developing countries, where safeguards typically are inadequate or lacking altogether. Although developing countries use 25% of the world's production of pesticides, they experience 99% of the deaths due to pesticide poisoning," the report said.

Children face a higher risk from pesticides because they may be more susceptible than adults or more greatly exposed than adults, the report said. Children's behaviour, playing and ignorance of risks, result in greater potential for exposure. Malnutrition and dehydration increase their sensitivity to pesticides. Currently around 200 million children are suffering from malnutrition.

Pesticide poisoning can occur via breathing, drinking or eating, or through the skin or mucous membranes. The symptoms resulting from acute poisoning may range from fatigue, dizziness, nausea and vomiting, to respiratory and neurological effects that may be life-threatening. Chronic, and even low-level exposure to pesticides has been linked to cancer, birth defects, and damage the nervous and the functioning of the endocrine system.

Sources of exposure

Diet can be a major source of exposure for children. As they grow, children drink more water and eat more food, per body weight, than do adults. Water and food containing pesticide residues may therefore be a source of chronic, low-level or high-level pesticide exposure.

Growing food on or near contaminated soils, using contaminated water on crops or for washing puts people and children at particular risk.

When a mother to be is exposed to pesticides, the child becomes exposed as well, before birth, while still in the womb. Small children can also come into contact with persistent and bio-accumulative pesticides through breast feeding. Protecting pregnant women and lactating mothers from exposure to toxic contaminants is therefore crucial.

Pesticides used in the field or in the household are often stored improperly in or around farmers' homes where family members can easily access them. These toxic substances may contaminate food or water and cause air pollution. In some instances, the empty pesticide containers are reused to store water and food.

Children tend to explore their immediate environment, play close to the ground and put things in their mouths. As a consequence, they may receive significant doses of pesticides from soils, dusts and contaminated objects that can be found in rural areas, homes or gardens.

Poverty

Poverty can put children in potentially high-risk situations. In poor families, children often help out on family farms where pesticides are used. Pesticide users, including teenagers, may lack access to protective equipment such as gloves and masks, and receive no training. As a result, pesticides are often being used by young workers carelessly, and without protection.

In many developing countries, the marketing and advertisement of pesticides is often uncontrolled or illicit. Misbranded or unlabelled formulations, including ready-made solutions in soft drink bottles and other unlabelled liquid containers, are sold at open stands. Low retail prices promote pesticide use but weak legislation and inadequate law enforcement fail to control risks.

Minimizing the risk

To reduce pesticide poisoning, FAO, UNEP and WHO urge:

* to reduce and eliminate possible sources of pesticide exposures to children at home and at work;

* to keep pesticides out of children's reach and store them securely in containers that are properly labelled and use child-proof tops;

* to reduce the use of agricultural pesticides through Integrated Pest Management (IPM):

* to train health care providers on the recognition and management of pesticide poisoning;

* to provide training for people on how to use pesticides judiciously and how to prevent exposure;

* to run information and education campaigns via TV and radio programmes; to reduce the risks associated with the use of pesticides through a comprehensive life-cycle approach, i.e. addressing all aspects of pesticide management from manufacturing until use or disposal following the FAO International Code of Conduct on the Distribution and Use of Pesticides.

Two key international conventions are aiming at reducing the adverse health and environmental aspects of pesticides: The Stockholm Convention on Persistent Organic Pollutants (POPs), created to reduce and eliminate 12 POPs of which nine are pesticides, and the Rotterdam Convention on the Prior Informed Consent Procedure for Certain Hazardous Chemicals and Pesticides in International Trade. The Rotterdam Convention facilitates information exchange on a broad range of potentially hazardous chemicals and gives importing countries the power to decide whether or not they want to receive future imports of certain chemicals.


Source: World Health Organization,  Date: October 5, 2004     http://www.sciencedaily.com


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 Message 3 of 3 in Discussion 
From: ReneSent: 1/18/2007 12:56 AM
 

 

Insecticide linked to poorer development

NEW YORK (UPI) -- Children who were exposed prenatally to the insecticide chlorpyrifos had poorer mental and motor development by age 3, says a U.S. study.

Chlorpyrifos, which was banned for U.S. residential use in 2001, is still widely applied to agricultural crops in the United States and abroad, including many fruits and vegetables.

The study assessed development of approximately 250 inner-city children from New York City who were born between 1998 and 2002.

By age 3 the children with the highest levels of chlorpyrifos at birth -- upper 20th percentile -- had significantly worse mental development and poorer motor skills than children with lower exposure levels, according to researchers at Columbia University's Mailman School of Public Health and the Centers for Disease Control and Prevention in Atlanta.

"These findings indicate that prenatal exposure to the insecticide chlorpyrifos not only increases the likelihood of developmental delay, but may have long-term consequences for social adjustment and academic achievement," said lead author Virginia Rauh.

The findings are published in the journal Pediatrics.

From the ArcaMax Publishing, Health & Fitness Newsletter:
HTTP: s-141028-444185 healthtips news http://www.arcamax.com/news/healthtips/s-141028-444185