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Archive for the 'Endocrine Disruption' Category


14
Jan

Agency Petitioned to Regulate Endocrine Disruptors

(Beyond Pesticides, January 14, 2010) Stating that current water-quality criteria does not reflect the latest scientific knowledge, The Center for Biological Diversity petitioned the U.S. Environmental Protection Agency (EPA) to establish new water-quality criteria for numerous endocrine-disrupting chemicals (EDC) under the Clean Water Act. If adopted, it will be a big step in regulating and […]

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21
Dec

Endocrine Disrupting Chemicals Bill Introduced in Congress

(Beyond Pesticides, December 21, 2009) Earlier this month, Congressman Jim Moran of Northern Virginia and Senator John Kerry of Massachusetts introduced legislation to explore linkages between hormone disrupting chemicals in the environment and everyday products and the dramatic increase of autism, hyperactivity, diabetes, obesity, breast cancer, prostate cancer and other hormone related disorders. After the […]

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15
Dec

Atrazine Exposure Triggers Release of Stress Hormone

(Beyond Pesticides, December 15, 2009) Exposure to the endocrine-disrupting herbicide atrazine triggers the release of stress hormones in rats, according to a new study published in the December 2009 issue of the journal Toxicological Sciences. The researchers believe this may explain how the popular weed killer produces some its harmful reproductive effects. The study, “Characterization […]

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17
Nov

Low-Level Pesticide Exposure In Utero Linked to Impacts on Behavior and Hormones

(Beyond Pesticides, November 17, 2009) According to a new study by researchers at the University of Wisconsin-Madison, exposure to low levels of the organophosphate insecticide chorpyrifos during pregnancy can impair learning, change brain function and alter thyroid levels of offspring into adulthood for tested mice, especially females. The study, “Long-term sex selective hormonal and behavior […]

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21
Oct

White House Orders EPA to Move on Endocrine Disrupting Pesticides without Data; EPA Seeks Approval of Guidelines

(Beyond Pesticides, October 21, 2009) The U.S. Environmental Protection Agency (EPA) is making available the battery of scientific assays and test guidelines for conducting the assays for each of 67 chemicals included for Tier 1 testing for endocrine disrupting effects during the next three months. This comes after the Office of Management and Budget (OMB) […]

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18
Sep

U.S. Geological Survey Identifies Intersex Fish Nationwide

(Beyond Pesticides, September 18, 2009) Previously documented in the Potomac River, which flows through downtown Washington, DC, the occurrence of “intersex” fish is now found to be nationwide. U.S. Geological Survey (USGS) researchers published their study, “Widespread occurrence of intersex in black basses from U.S. rivers” in the online edition of Aquatic Toxicology. USGS researchers […]

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31
Jul

Report Implicates Pesticides in Chesapeake Bay’s Decline

(Beyond Pesticides, July 31, 2009) A group of advocates and experts is warning that pesticide pollution from farm fields and households is contributing to the Chesapeake Bay’s decline, and may well be linked to declines in frogs across the region and intersex fish seen in the Potomac River. In a report released yesterday, the group […]

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29
Apr

Noted Scientist Says EPA Tests for Endocrine Disruption Outdated

(Beyond Pesticides, April 29, 2009) The U.S. Environmental Protection Agency (EPA) announced earlier this month that it is finally ready to move forward with preliminary testing of 67 active and inert pesticide ingredients for possible endocrine disrupting effects. But, according to prominent researcher and author Theo Colborn, PhD, these tests are outdated, insensitive, crude, and […]

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17
Apr

EPA Identifies Pesticides To Be Sceened for Endocrine Disruption

(Beyond Pesticides, April 17, 2009) Thirteen years after the Food Quality Protection Act (FQPA) ordered EPA to develop a screening process for endocrine disrupting chemicals, the Environmental Protection Agency (EPA) has released a final list of chemicals to be included in Tier 1 testing for endocrine disrupting effects of pesticides in use. While the list […]

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19
Feb

New Database Maps Endocrine Disruption in utero

(Beyond Pesticides, February 19, 2009) The Endocrine Exchange (TEDX) has released a new database on the prenatal origins of endocrine disruption, called Critical Windows of Development. It compares human development in the womb with laboratory research showing where and when low-dose exposures to chemicals have effects. The timeline currently charts three chemicals: dioxin, bisphenol A […]

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22
Jan

Sexual Disruption Linked to Environmental Pollutants

(Beyond Pesticides, January 22, 2009) A new English study has found that chemicals found in rivers and waste waters could be linked to male infertility. These chemicals, known as anti-androgens, block the action of the male sex-hormone testosterone and could impact the development of male reproductive organs in humans. The study entitled, “Statistical Modeling Suggests […]

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02
Dec

Study Finds Controversial Pesticide May Contribute to Obesity

(Beyond Pesticides, December 2, 2008) Tributyltin (also known as TBT), a ubiquitous pollutant that has a potent effect on gene activity, could be promoting obesity, according to an article in the December issue of BioScience, the journal of the American Institute of Biological Sciences. The chemical is used in antifouling paints for boats, as a […]

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23
Sep

Gender-Bending Herbicide Contaminates Lakes Far from Use Sites

(Beyond Pesticides, September 23, 2008) According to the Minnesota Department of Agriculture’s 2007 Water Quality Monitoring Report, released in August 2008, the endocrine disrupting herbicide atrazine is detected in pristine lakes in northern Minnesota far from the agricultural fields where it is applied. Metolachlor, acetochlor and dimethenamid are also frequent contaminants, according to the statewide […]

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22
Sep

Pyrethroid Pesticide Affects Puberty at Low Levels

(Beyond Pesticides, September 22, 2008) A study published in the September issue of Environmental Health Perspectives finds that low-dose, short-term exposure to esfenvalerate, a synthetic pyrethroid pesticide, delays the onset of puberty in rats at doses two times lower than U.S. EPA’s stated no observable effect level (NOEL) of 2.0 mg/kg/day. Synthetic pyrethroids are used […]

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17
Jul

In Agricultural Areas, Male Toads Feminized

(Beyond Pesticides, July 17, 2008) In a new study published in Environmental Health Perspectives, researchers have found an increased occurrence of intersex toads in areas with greater agricultural land cover. This points to a link between certain pesticides and endocrine disruption, a change in the hormonal balance that can have sexual and reproductive effects. Such […]

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30
May

Study Finds Atrazine Disrupts Human Hormone Activity

(Beyond Pesticides, May 30, 2008) A recent study has linked the common herbicide atrazine with endocrine disruption in both fish and human cells. Entitled “The Herbicide Atrazine Activates Endocrine Gene Networks via Non-Steroidal NR5A Nuclear Receptors in Fish and Mammalian Cells,” the University of Califonia, San Francisco (UCSF) research examines the reaction of zebrafish to […]

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08
May

Melting Glaciers Source of Persistent Pollutants

(Beyond Pesticides, May 8, 2008) New research shows that melting Antarctic glaciers are releasing once frozen stores of persistent organic chemicals, now banned in many parts of the world. Marine biologist, Heidi Geisz, a Ph.D. student at the Virginia Institute of Marine Science studying the fate and effect of organic contaminants in the Antarctic, has […]

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10
Apr

Intersex Frogs More Common in Suburban Areas

(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 […]

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19
Feb

Researcher Shows Chemicals Alter Male Reproductive System

(Beyond Pesticides, February 19, 2008) Common household chemicals and widespread pollutants are changing male reproductive health and impacting sexual function, development and cancer rates of today’s generations and possibly their offspring, according to more than 15 years of research by a Colorado State University expert. For example, one study looking at sperm counts globally from […]

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09
Jan

Study Finds That Antibacterial Enhances Endocrine Disruption

(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 […]

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11
Dec

Reclaiming Our Healthy Future: National Pesticide Forum Update

(Beyond Pesticides, December 11, 2007) Arturo Rodriguez (UFW President), Devra Davis, Ph.D. (author and University of Pittsburgh professor of epidemiology) and Tyrone Hayes, Ph.D. (UC Berkeley professor of integrative biology) will be speaking at the 2008 National Pesticide Forum. The conference, Reclaiming Our Healthy Future: Political change to protect the next generation, will be held […]

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18
Oct

Scientists Cite Pesticides’ Multigeneration Effects, Call for Regulation

(Beyond Pesticides, October 18, 2007) In a scholarly review written by Theo Colborn, Ph.D. and Lynn Carroll, Ph.D., the authors point to the multigenerational effects of some pesticides that they say demand improved regulation to protect human and environmental health. The review, “Pesticides, Sexual Development, Reproduction, and Fertility: Current Perspective and Future Direction,” appears in […]

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24
Sep

Members of Congress Push EPA To Act on Endocrine Disruptors

(Beyond Pesticides, September 24, 2007) Seven representatives wrote to the EPA last Thursday, urging the government agency to act promptly to identify and screen products for dangerous endocrine-disrupting chemicals. The letter asks EPA Administrator Stephen Johnson to provide definite deadlines in the testing and control of endocrine disruptors, which are substances that interfere with the […]

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