Research team compared fields and fruits in heart of nation’s strawberry patch

PULLMAN, Wash.—Side-by-side comparisons of organic and conventional strawberry farms and their fruit found the organic farms produced more flavorful and nutritious berries while leaving the soil healthier and more genetically diverse.

“Our findings have global implications and advance what we know about the sustainability benefits of organic farming systems,” said John Reganold, Washington State University Regents professor of soil science and lead author of a paper published today in the peer-reviewed online journal, PLoS ONE. “We also show you can have high quality, healthy produce without resorting to an arsenal of pesticides.”

The study is among the most comprehensive of its kind, analyzing 31 chemical and biological soil properties, soil DNA, and the taste, nutrition and quality of three strawberry varieties on more than two dozen commercial fields—13 conventional and 13 organic.

“There is no paper in the literature that comprehensively and quantitatively compares so many indices of both food and soil quality at multiple sampling times on so many commercial farms,” said Reganold. Previous Reganold studies of “sustainability indicators” on farms in the Pacific Northwest, California, British Columbia, Australia, and New Zealand have appeared in the journals Science, Nature, and Proceedings of the National Academy of Sciences.

All the farms in the current study were in California, home to 90 percent of the nation’s strawberries and the center of an ongoing debate about the use of soil fumigants. Conventional farms in the study used the ozone-depleting methyl bromide, which is slated to be replaced by the highly toxic methyl iodide over the protests of health advocates and more than 50 Nobel laureates and members of the National Academy of Sciences. In July, California Sen. Dianne Feinstein asked the EPA to reconsider its approval of methyl iodide.

Reganold’s study team included Preston Andrews, a WSU associate professor of horticulture, and seven other experts, mostly from WSU, to form a multidisciplinary team spanning agroecology, soil science, microbial ecology, genetics, pomology, food science, sensory science, and statistics. On almost every major indicator, they found the organic fields and fruit were equal to or better than their conventional counterparts.

Among their findings:

• The organic strawberries had significantly higher antioxidant activity and concentrations of ascorbic acid and phenolic compounds.
• The organic strawberries had longer shelf life.
• The organic strawberries had more dry matter, or, “more strawberry in the strawberry.”
• Anonymous testers, working at times under red light so the fruit color would not bias them, found one variety of organic strawberries was sweeter, had better flavor, and once a white light was turned on, appearance. The testers judged the other two varieties to be similar.

The researchers also found the organic soils excelled in a variety of key chemical and biological properties, including carbon sequestration, nitrogen, microbial biomass, enzyme activities, and micronutrients.

DNA analysis found the organically managed soils had dramatically more total and unique genes and greater genetic diversity, important measures of the soil’s resilience to stress and ability to carry out essential processes.

Reference: Washington State University, Study finds commercial organic farms have better fruit and soil, lower environmental impact, 1-Sep-2010.

Photo: John Reganold

Berkeley — Children who were exposed to organophosphate pesticides while still in their mother’s womb were more likely to develop attention disorders (ADHD) years later, according to a new study by researchers at the University of California, Berkeley.

The new findings, to be published Aug. 19 in the journal Environmental Health Perspectives (EHP), are the first to examine the influence of prenatal organophosphate exposure on the later development of attention problems. The researchers found that prenatal levels of organophosphate metabolites were significantly linked to attention problems at age 5, with the effects apparently stronger among boys.

Earlier this year, a different study by researchers at Harvard University associated greater exposure to organophosphate pesticides in school-aged children with higher rates of attention deficit hyperactivity disorder (ADHD) symptoms.

“These studies provide a growing body of evidence that organophosphate pesticide exposure can impact human neurodevelopment, particularly among children,” said the study’s principal investigator, Brenda Eskenazi, UC Berkeley professor of epidemiology and of maternal and child health. “We were especially interested in prenatal exposure because that is the period when a baby’s nervous system is developing the most.”

The study follows more than 300 children participating in the Center for the Health Assessment of Mothers and Children of Salinas (CHAMACOS), a longitudinal study led by Eskenazi that examines environmental exposures and reproductive health. Because the mothers and children in the study are Mexican-Americans living in an agricultural community, their exposure to pesticides is likely higher and more chronic, on average, than that of the general U.S. population.

Yet, the researchers pointed out that the pesticides they examined are widely used, and that the results from this study are a red flag that warrants precautionary measures.

“It’s known that food is a significant source of pesticide exposure among the general population,” said Eskenazi. “I would recommend thoroughly washing fruits and vegetables before eating them, especially if you’re pregnant.”

Organophosphate pesticides act by disrupting neurotransmitters, particularly acetylcholine, which plays an important role in sustaining attention and short-term memory.

“Given that these compounds are designed to attack the nervous system of organisms, there is reason to be cautious, especially in situations where exposure may coincide with critical periods of fetal and child development,” said study lead author Amy Marks, who was an analyst at UC Berkeley’s School of Public Health at the time of the study.

Many of these same UC Berkeley researchers are also finding that children with certain genetic traits may be at greater risk, a finding that is being published the same day in a separate EHP paper. That study found that 2-year-olds with lower levels of paraoxonase 1 (PON1), an enzyme that breaks down the toxic metabolites of organophosphate pesticides, had more neurodevelopmental delays than those with higher levels of the enzyme. The authors suggest that people with certain PON1 genotypes could be particularly vulnerable to pesticide exposure.

In the study on attention problems, researchers tested for six metabolites of organophosphate pesticides in mothers twice during pregnancy and in the children several times after birth. Together, the metabolites represent the breakdown products of about 80 percent of all the organophosphate pesticides used in the Salinas Valley.

The researchers then evaluated the children at age 3.5 and 5 years for symptoms of attention disorders and ADHD using maternal reports of child behavior, performance on standardized computer tests, and behavior ratings from examiners. They controlled for potentially confounding factors such as birthweight, lead exposure and breastfeeding.

Each tenfold increase in prenatal pesticide metabolites was linked to having five times the odds of scoring high on the computerized tests at age 5, suggesting a greater likelihood of a child having clinical ADHD. The effect appeared to be stronger for boys than for girls.

While a positive link between prenatal pesticide exposure and attention problems was seen for 3.5-year-olds, it was not statistically significant, a finding that did not surprise the researchers.

“Symptoms of attention disorders are harder to recognize in toddlers, since kids at that age are not expected to sit down for significant lengths of time,” said Marks. “Diagnoses of ADHD often occur after a child enters school.”

The UC Berkeley researchers are continuing to follow the children in the CHAMACOS study as they get older, and expect to present more results in the years to come.

The findings add to the list of chemical assaults that have been linked to ADHD in recent years. In addition to pesticides, studies have found associations with exposure to lead and to phthalates, which are commonly used in toys and plastics.

“High levels of the symptoms of ADHD by age 5 are a major contributor to learning and achievement problems in school, accidental injuries at home and in the neighborhood, and a host of problems in peer relationships and other essential competencies,” said UC Berkeley psychology professor Stephen Hinshaw, one of the country’s leading experts on ADHD, who was not part of this study. “Finding preventable risk factors is therefore a major public health concern.”

Literature: University of California – Berkeley, Prenatal exposure to pesticides linked to attention problems, 19-Aug-2010.

Related Articles:

• Pesticides in kids linked to ADHD- Attention-Deficit/Hyperactivity Disorder, study finds
• Western Diet linked to ADHD
• Groups Seeking Ban on Organophosphate Pesticide Go to Federal Court
• Common household pesticides linked to childhood cancer cases in Washington area
• Anxiety in adult female mice following perinatal exposure to Chlorpyrifos

Chlorpyrifos – Outlawed in homes and gardens, pesticide is still sprayed on food crops

Community groups joined environmental advocates in filing a lawsuit at July 22th to force the Environmental Protection Agency to decide once and for all whether or not it will ban the toxic pesticide chlorpyrifos.

Chlorpyrifos — sprayed on corn, oranges, almonds and other crops — is acutely poisonous and is among a class of pesticides initially developed for World War II-era chemical warfare. Short term effects of exposure to chlorpyrifos include chest tightness, blurred vision, headaches, coughing and wheezing, weakness, nausea and vomiting, coma, seizures, and even death. Prenatal and early childhood exposure has been linked to low birth weights, developmental delays and other health effects.

In recognition of the particular risks the chemical presents for children, EPA banned residential uses of chlorpyrifos in 2001. But the pesticide is still widely used in fields and orchards across the country. This continued use puts nearby rural communities in harm’s way, and chlorpyrifos ends up in our nation’s food and water supplies, leading to even more widespread exposure (click here for a list of foods with documented chlorpyrifos residue.)

Luis Medellin has experienced the dangers of this pesticide firsthand. Medellin lives with his parents and three little sisters in the agricultural town of Lindsay, California, where chlorpyrifos is sprayed routinely on the orange groves surrounding his home. During the growing season, the family is awakened several times a week by the sickly smell of nighttime pesticide spraying. What follows is worse: searing headaches, nausea, vomiting. After undergoing testing for pesticides in his body, the 24-year-old Medellin discovered concentrations of chlorpyrifos breakdown compounds nearly five times the national average for adults, as calculated by the Centers for Disease Control and Prevention.

“When I found out I had this chemical in my body, it scared me. But what really worries me is how my little sisters might be affected.” said Medellin, a community organizer with the Lindsay-based El Quinto Sol. “I wish the growers would stop using such dangerous chemicals so my family and I can be safe.”

In September 2007, Natural Resources Defense Council (NRDC) and Pesticide Action Network North America (PANNA) filed a petition with EPA asking the agency to ban chlorpyrifos. In the nearly three years since, the agency has not responded. Today’s lawsuit, filed by the nonprofit environmental law firm Earthjustice on behalf of NRDC and PANNA, would force EPA to make a decision on the pesticide’s ban.

“This dangerous pesticide has no place in our fields, near our children, or on our food,” said Earthjustice attorney Kevin Regan. “We’re asking a court to rule so that EPA will finish the job and ban this poison.”

An estimated 8 to 10 million pounds of chlorpyrifos are applied to U.S. crops each year (click here for a map showing where this pesticide is used.)

“The overwhelming evidence shows that chlorpyrifos is dangerous, especially to children and fieldworkers,” said Aaron Colangelo, a senior attorney with NRDC. “There’s no good reason for EPA to take three years to decide what to do about it.”

Exposure to chlorpyrifos in agricultural communities is widespread. California Air Resources Board monitoring in the state’s San Joaquin Valley detected chlorpyrifos in one-third of all ambient air samples, sometimes at levels that pose serious health risks to young children. Monitoring by PANNA and community groups in Washington state and Luis Medellin’s hometown of Lindsay, California has shown that daily exposure to chlorpyrifos can be substantial, regularly exceeding the “acceptable” 24-hour acute dose for a one-year-old child established by the EPA.

In one 2000 incident, dozens of students and staff at an elementary school in Ventura, CA fell ill after chlorpyrifos applied to a nearby lemon orchard drifted onto school grounds.

“Chlorpyrifos is among a class of pesticides that targets developing nervous systems — in insects and humans alike. These pesticides are linked to a host of devastating diseases ranging from ADHD to childhood brain cancer,” said PANNA senior scientist Dr. Margaret Reeves. “Their human health costs are just too high and farmers are farming successfully without them. There’s no defensible reason for continuing to use chlorpyrifos.”

Reference: EarthJustice, Release: Groups Seeking Ban on Toxic Pesticide Go to Federal Court, New York, July 22, 2010.

BACKGROUND

• A copy of the lawsuit
• A fact sheet on chlorpyrifos
• A map documenting where chlorpyrifos is used
• A list of foods with documented chlorpyrifos residue
• A study linking chlorpyrifos to low birth weights
• A study linking chlorpyrifos to developmental delays

A young chemically sensitive woman is in need of help due to pesticide spraying

Elvira Roda lives in the Spanish region of Valencia and is in great need. Her family and friends are asking for international help. The 35-year-old woman is suffering from Multiple Chemical Sensitivity, MCS. The humidity and heat where she lives means an increased number of bugs and mosquitoes. The officials from her area are using highly toxic organophosphate pesticide spraying in the trees and roadsides (see video). These neurotoxins are very harmful to humans and animals. Elvira’s family drew up a petition on July 1st, 2010 to ask for assistance.

Treatment success from the specialty clinic is now destroyed, instead she faces danger

Elvira was treated at one of the world’s best environmental clinics, the Environmental Health Center in Dallas. Her physical health was stabilized and hope returned to her family. Her case was in the media for some time.

This young woman who is disabled with severe reactions by small traces of perfume has already broken down several times due to highly toxic pesticides that are being applied by the officials outside of her home. These pesticides are particularly dangerous for her because they disable a specific detoxification enzyme and the body then poisons itself.

At the moment Elvira is brought to the sea every day. It is difficult for her because she has severe sensitivity to light among other things. She gets spasms, has immune damage, and suffers from fibromyalgia. She spends the whole day on the beach, not enjoying the sand and the water, but instead staying still in a “bed” due to her bad health. There is no other solution. It is the only way to protect her from being exposed to dangerous toxins. Unfortunately there are no emergency headquarters in Spain for the chemically sensitive or in any other countries for that matter.

Young women in danger

Eliva’s parents have designed her a safe “bubble” where her living space is free of harmful substances, so that this 35 year old woman can normally cope and get along well. She has a sauna there for detoxification so Eliva has a safe haven to live in. She had a safe oasis, but that was before. Now toxic pesticides are sprayed a few yards from the house and the trees are fogged from top to bottom.

The family has informed the authorities of the danger of this pesticide spraying for the young woman. They requested notification of this spraying beforehand. Many don’t understand that these sprays used can penetrate through sealed windows and doors of apartments. These types of pesticides remain active for a long time and they can release gases for several days or weeks.

Not only are those who are chemically sensitive are threatened by these pesticides, but everyone who lives in the environment, especially babies and children whose immune systems and detoxification systems are not fully developed. The main objective of this class of pesticide is to attack the nervous system, but they can also damage the immune system as in the case of chlorpyrifos, which is one type which is known to cause multiple chemical sensitivity.

Petition in support of Elvira Roda

In order to stop this spraying of pesticides, Elvira, and the family have written a petition to the City Council. Anyone can also sign this petition and make a comment. It is important that Elvira receives international assistance. Please post on Facebook, in newsgroups, and on Twitter to help the family spread the news.

Petition for Elvira Roda: http://www.gopetition.com/online/37492.html

You can sign and comment here:

http://www.gopetition.com/online/37492/sign.html

Give Elvira support, strength and hope

Details regarding Elvira’s situation are on the Website Elvira Roda There you can see what her family has built for her. It would be wonderful to write Elvira and her family to give them courage to move forward in any language. English and Spanish are preferred if possible, but your own language can be translated by computer. Anyone who suffers from MCS can relate to the incredible pain Elvira must be dealing with now.

Since Elvira also suffers from electrical sensitivity, she cannot answer herself, but gets all her letters read aloud. Elvira is trying to maintain contact through her website. She writes by hand on paper, and the family and friends help to refresh the page. It can sometimes take a while to get online information, because of the intensive care for the young woman.

All the best for Elvira!

We wish you much strength and hopefully Elvira will assist in the quick understanding on the part of the City Council to move on to non-toxic pest control methods that would benefit of all inhabitants of the Spanish city.

Author: Silvia K. Müller, CSN – Chemical Sensitivity Network, 11 July 2010

Translation: Christi Howarth for CSN

• German Original
• Japanese Translation

Please feel free to add this article to your website or blog. Thank you!

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More articles about Chemical Sensitivity:

• Spanish Workgroup met with Ministry of Health to create a MCS Consensus Document
• Join the project “Multiple Chemical Sensitivity uncovered” / Lola Vicente
• New Housing Non-Profit Forming with Focus on Environmental Sensitivities
• MCS in Japan: A lecture at the House of Representatives of Japan
• The naked Truth about MCS – Multiple Chemical Sensitivity – Including Foreword about German Situation

In an article to be published on 21 June 2010 in the Journal of Clinical Oncology, researchers from Inserm (Inserm unit 625 – Research Group on Human and Mammalian Reproduction, University of Rennes 1), the CHU (University Hospital Centre) in Pointe à Pitre (urology department, University of the French West Indies and Guiana) and from the Center for Analytical Research and Technology (University of Liège, Belgique), show that exposure to chlordecone (also named Kepone), an organochlorine chemical with well defined estrogenic properties used in the French West Indies until 1993, is associated to a significant increased risk of prostate cancer.

Chlordecone is an organochlorine insecticide used in the French West Indies from 1973 to 1993 to control the banana root borer. Permanently polluted soils and waters have remained the primary source of foodstuff contamination, and humans being continue to be exposed to this chemical. Chlordecone is recognized as endocrine disruptor, and is classified by IARC/WHO as possibly carcinogenic to humans.

Research results to be published in the Journal of Clinical Oncology come from an interdisciplinary prostate cancer epidemiology program named Karuprostate (from Karukera, the original Caribbean name of Guadeloupe). A case control study compared the characteristics of 709 consecutive incident cases of prostate cancer and 723 controls without prostate cancer. One of the main objectives of the research programme was to test the hypothesis that chlordecone exposure favors the development of prostate cancer in the French West Indies. Chlordecone exposure was evaluated by measuring its concentration in the blood.

The analysis of the results by the researchers shows that chlordecone exposure is associated to a significant increase in the risk of prostate cancer with increasing plasma chlordecone concentration. These results are supported by the fact that men, presenting genetic variations which reduce their ability to eliminate the molecule, have higher risk of developing the disease.

The prostate cancer risk associated with chlordecone exposure was higher in subjects with a family history of prostate cancer first-degree relatives. Moreover, the prostate cancer risk associated with chlordecone exposure was particularly marked in subjects who had spent some time living in a Western country. According to the authors, several explanations may be given:

“The interaction of family history with prostate cancer may be explained by the presence of genetic susceptibility factors which are common both to the disease and to the chlordecone metabolic pathway but also by similar patterns of exposure, shared by members of a same family”.

“Migration constitutes a period of exposure to specific environmental risk factors, including hazardous chemicals or nutritional agents. Residing in Western countries may induce significant changes in an individual, due, for example, to the adoption of a Western lifestyle, including, in particular, eating habits that may be risk factors for prostate cancer”

These results are the first to suggest that there is a causal relationship between chlordecone exposure and prostate cancer risk, and support the hypothesis that environmental estrogens may be involved in the development of prostate cancer. Such a relationship may be affected by genetic background, together with environmental agents related to diet or lifestyle.

Literature: INSERM (Institut national de la santé et de la recherche médicale), Chlordecone exposure and risk of prostate cancer, June 22, 2010.