(Beyond Pesticides, June 17, 2008) A recent study at Cardiff University in Wales shows that antimicrobial wipes, including those containing triclosan, may be spreading antibiotic-resistant bacteria, rather than killing it. Researchers from the Welsh School of Pharmacy studied the bacteria methicillin-resistant Staphylococcus aureus, or MRSA, and the ability of different types of wipes to remove or kill it. They found that in “normal use” conditions, or how hospitals in Wales have been using the wipes, bacteria is only moved from surface to surface, increasing potential exposure. According to the university, “The research involved a surveillance programme observing hospital staff using surface wipes to decontaminate surfaces near patients, such as bed rails, and other surfaces commonly touched by staff and patients, such as monitors, tables and keypads. It was found that the wipes were being applied to the same surface several times and used on consecutive surfaces before being discarded.” Furthermore, in laboratory replications, the team found “that although some wipes can remove higher numbers of bacteria from surfaces than others, the wipes tested were unable to kill the bacteria removed. As a result, high numbers of bacteria were transferred to other surfaces when reused.” The findings raise concern from others […]

(Beyond Pesticides, June 4, 2008) On May 29, 2008, the U.S. Environmental Protection Agency (EPA) released its final risk mitigation decision for ten rodenticides, which outlines new measures it says will help protect children and the public from accidental poisonings as well as to decrease exposures to pets and wildlife from rodent-control products. However, because the decision omits key uses, allows continued applicator use of dangerous formulations, and recognizes a lack of product efficacy without a fully integrated program (yet does not require it on the label), environmentalists feel the final risk mitigation decision falls short of adequately protecting the health of people, wildlife and the environment.EPA is requiring that ten rodenticides used in bait products marketed to consumers be enclosed in bait stations, making the pesticide inaccessible to children and pets, and is also prohibiting the sale of loose bait, such as pellets, for use in homes. These ten rodenticides are: ”¢ Brodifacoum ”¢ Bromadiolone ”¢ Bromethalin ”¢ Chlorophacinone ”¢ Cholecalciferol ”¢ Difenacoum ”¢ Difethialone ”¢ Diphacinone ”¢ Warfarin ”¢ Zinc phosphide Exposure to children is also a major concern for these chemicals. According to the 2006 Annual Report of the American Association Poison Control Centers’ National Poison Data […]

(Beyond Pesticides, April 10, 2008) Common frogs that live in suburban areas are more likely than their rural counterparts to develop reproductive abnormalities, according to David Skelly, PhD, professor of ecology at the Yale School of Forestry and Environmental Studies. This phenomenon becomes a serious concern as the frog’s mating season begins, leaving researchers to wonder: will frogs be clear on their role in the annual ritual? Research by Dr. Skelly, soon to be published, focuses on the common green frog, Rana clamitans, within the Connecticut River Valley. A total of 233 frogs were collected from various ponds and landscapes with the river valley and among them 13 percent have abnormalities occurring in their reproductive organs. In urban areas, 18 percent of the collected frogs are intersex, and in suburban areas 21 percent. Frogs collected from agricultural areas have the lowest rate of reproductive problems with just 7 percent classified as intersex. According to Dr. Skelly, the more suburban the land cover, the more likely the abnormalities. “This is the first evidence that I think anyone has provided that agriculture is doing anything but pushing those rates higher,” remarked Dr. Skelly of the intersex phenomena. In an attempt to explain […]

(Beyond Pesticides, March 17, 2008) Not everything that goes down the drain can be removed by water treatment plants, which leaves some alarming contaminants in America’s drinking water. A five-month investigation by the Associated Press (AP) finds trace quantities of pharmaceuticals in the drinking water of 41 million Americans. Scientists fear that ingestion of these tiny amounts of drugs may pose health risks to the public, wildlife and aquatic organisms. The AP investigation surveyed the 50 largest cities in the country and a dozen other major water providers, as well as other small providers in each of the 50 states. A wide range of pharmaceuticals, whether administered to humans or to farm animals, are found in the water of 24 major metropolitan areas, and tests done in the watersheds of 35 major water providers shows 28 testing positive for pharmaceuticals. The levels of pharmaceuticals found in the water are at levels measured in the parts per billion or trillion, far below levels of medical use. The federal government has not set safety limits for drugs in drinking water. In fact, fewer than half of the 62 major water providers could say their water was tested. Water treatment plants are not […]

(Beyond Pesticides, February 28, 2008) Earthworms studied in agricultural fields have been found to contain chemicals from household products (including the widely marketed triclosan, a hazardous antimicrobial) and manure, indicating that such substances are entering the food chain. U.S. Geological Survey (USGS) Scientists and their colleague from Colorado State University at Pueblo published their findings in Environmental Science and Technology. The study results demonstrate that organic chemicals introduced to the environment via land application of biosolids, the solid byproduct of wastewater treatment, and manure as fertilizers are transferred to earthworms. Earthworms continuously ingest soils for nourishment and can accumulate the chemicals present in the soil.The scientists collected soil and earthworms from three agricultural fields””a soybean field fertilized with biosolids, a corn field fertilized with swine manure, and a soybean field that had received no applications of either biosolids or manure for at least 7 years. The chemicals investigated are considered indicators of human and animal waste sources and include a range of active ingredients in common household products such as detergents, antibacterial soaps, fragrances, and pharmaceuticals. All of these chemicals tend to be concentrated in the municipal waste distribution and disposal process and are referred to as anthropogenic waste indicators […]

(Beyond Pesticides, January 22, 2008) Triclosan, a very common antibacterial chemical, is present in the plasma and breast milk of nursing mothers, according to a study by Swedish researchers. Every one of the 36 mothers tested positive for triclosan levels in their bodies, and the concentrations were clearly and significantly higher in the exposed group (i.e., those that use triclosan-containing products) than in the control group. This does not come as a surprise since triclosan is widely used in personal care products””including soaps, deodorants, and toothpaste””as well as plastics and textiles. Although there was high variability within groups, even members of the control group had triclosan present in their plasma, indicating that there are other significant sources of exposure outside of hygiene products. Triclosan is not removed from wastewater by conventional treatment processes and has been found in both wastewater effluent and sewage sludge. The authors of Triclosan in plasma and milk from Swedish nursing mothers and their exposure via personal care products say that the significance of the presence of triclosan in plasma and breast milk of nursing mothers is not easily deduced and that the health effects, especially the long-term effects of chronic exposure, of triclosan are not […]

(Beyond Pesticides, January 9, 2008) Triclocarban, an antibacterial compound widely used as an additive to a range of household and personal care products including bar soaps, detergents, body washes, cleansing lotions, and wipes, has been found to have an amplification effect on the activity of natural hormones, which in turn can lead to adverse reproductive and developmental effects. In the study, published online November 29, 2007 in Endocrinology, researchers from University of California- Davis and Yale University investigated the endocrine disrupting properties of triclocarban and other polychlorinated diphenyl urea compounds by exposing human cells and rats to levels similar to those found in people. Triclocarban was found to have a synergistic interaction with the sex hormone, testosterone- present in both males and females. This interaction produced a positive, amplified biological effect, which is likely to hyperstimulate native sex hormones. This amplification of sex hormone activity occurs at the target cell and can result in developmental defects or decreased reproductive function. Researchers further explained that ovulation and ovarian function in females can be disrupted, while sperm quality can be decreased in males. The researchers also point out that the results of their study create a new category for endocrine disruptive substances […]

(Beyond Pesticides, December 14, 2007) A study recently published in Environmental Health Perspectives has found concentrations of the antibacterial chemical triclosan in a high percentage of subjects tested. Used in common household products like plastics, personal care products, and textiles, exposure routes are becoming difficult to avoid. According to the report’s summary, “Concentrations differed by age and socioeconomic status but not by race/ethnicity and sex. Specifically, the concentrations of triclosan appeared to be highest during the third decade of life and among people with the highest household incomes.” The study analyzed urine samples from 2,517 individuals, age 6 and over. Annual household income ranged from less than $5,000 to $75,000, and three major self-reported racial/ethnic groups were non-Hispanic black, non-Hispanic white, and Mexican American. Of the 2,517 urine samples, 74.6 percent contained triclosan. However, “the frequency of detection of triclosan varied by income group (63.7% [$20,000-$45,000]; 78.7% [$45,000]).” The report discussed the high levels of detection: “We detected concentrations of free plusconjugated species of triclosan in urine in 74.6% of the samples examined. This high frequency of detection is most likely associated with daily use by the US general population of consumer products that contain triclosan, including at least one […]

(Beyond Pesticides, October 18, 2007) Antibacterial soaps show no health benefits over plain soaps and, in fact, may render some common antibiotics less effective, says University of Michigan public health professor Allison Aiello, Ph.D. The study, “Consumer Antibacterial Soaps: Effective or Just Risky?” appears in the August edition of Clinical Infectious Diseases. In the first known comprehensive analysis of whether antibacterial soaps containing triclosan work better than plain soaps, Dr. Aiello of the University of Michigan School of Public Health and her team found that washing hands with an antibacterial soap was no more effective in preventing infectious illness than plain soap. Moreover, antibacterial soaps at formulations sold to the public do not remove any more bacteria from the hands during washing than plain soaps. Because of the way triclosan, the main active ingredient in many antibacterial soaps, reacts in the cells, it may cause some bacteria to become resistant to commonly used drugs such as amoxicillin, the researchers say. These changes have not been detected at the population level, but e-coli bacteria bugs adapted in lab experiments showed resistance when exposed to as much as 0.1 percent weight/volume triclosan soap. “What we are saying is that these e-coli could […]

(Beyond Pesticides, 2nd October 2007) Target Corp. has been fined over $40,000 by the U.S. Environmental Protection Agency (EPA) for violating pesticide-labeling rules under the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA). As part of the penalty, EPA (Region 5) filed a consent agreement and final order with Target to halt the distribution and sale of the products in violation. According to EPA, Target sold and distributed products from its stores and website that made pesticidal claims on their labels. Some product’s properties also made comparisons to other registered products sold by competitors. An inspector cited the company for violation in April and Target is now removing pesticidal claims from the products.The products identified were: Antimicrobial Toilet Seats, Home Ultimate Mattress Pads, Home Ultimate Pillows- which made “germ-killing” claims and Cleaner With Bleach, which compared its disinfectant properties with a competitor. Under FIFRA (Section 2(u)), any substance or product intended for “preventing, destroying, repelling, or mitigating any pest,” which includes germs and bacteria, is defined as a pesticide and must be registered with EPA prior to sale and distribution. EPA considers disinfectants, antimicrobial and antibacterial products to be pesticides. This settlement is one of several recent EPA crackdowns concerning the […]

(Beyond Pesticides, February 16, 2007) Changing Course in a Changing Climate: Solutions for health and the environment, the 25th National Pesticide Forum, will be held June 1-3 at Loyola University (Water Tower campus) in Chicago’s Magnificent Mile neighborhood. This exciting environmental health conference is convened by Beyond Pesticides and co-sponsored by Safer Pest Control Project, Nutrition for Optimal Health Association and others. The Forum begins Friday afternoon with a Chicago City Hall green roof tour and ends Sunday at noon. A Pesticide Working Group meeting will follow. See details below. Register online or call 202-543-5450 to register by phone. Forum topics include Global warming: Consequences and the organic connection; Environmental justice; Elevated risks of pesticide mixtures; The hazards and fate of common antibacterials; The truth about nanotechnology; Asthma and the pesticide link; New legislative opportunities; Passing local policies; Great Lakes/water contamination; Sustainable agriculture, nutrition and urban gardens; Scientific integrity; Safer pest management strategies; and more. Featured Speakers (see updated list with bios): Samuel S. Epstein, M.D. (2007 Dragonfly Award recipient), author of The Politics of Cancer, professor emeritus at the University of Illinois School of Public Health and chairman of the Cancer Prevention Coalition; Rolf Halden, Ph.D., P.E., professor at […]

(Beyond Pesticides, January 26, 2007) With an annual introduction of 200 to 300 new anti-microbial products, scientists are saying that the most effective way to fight germs is the old fashioned way””soap and water. Amid a national trend of increasing germophobia, experts are saying soap and water are a better option than alcohol-based disinfectants and antibacterial soaps. In 2005, the U.S. Food and Drug Administration led a panel of experts and industry representatives to weigh and analyze different germ killing methods. The panel found “no firm scientific evidence that the flood of antimicrobial products we observe has any discernible benefit over the use of regular soap and water.“ Few people are aware that plain soap is an anti-microbial. It kills bacteria by making their cell membranes leak fluids. This coupled with the motion of scrubbing the hands together””which loosens microbes and makes them fall into the soapy solution and wash away””creates “one of the most critical control strategies” for germs, according to the U.S. Centers for Disease Control and Prevention. According to Mike Richardson, an industry analyst at the Freedonia Group in Cleveland, consumers spend more than $200 million on anti-microbial products every year. With sanitizers being used on shopping […]