Utah Physicians for a Healthy Environment
Transcript of Utah Physicians for a Healthy Environment
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Utah Physicians for a Healthy Environment
Dr. Brian Moench
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Utah Physicians for a Healthy Environment
Dr. Brian Moench
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Artyom Sidorkin
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Bronchial Tree
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“You are what you breathe”
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Save Utah’s air
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Save Utah’s airPlant a tree in the
body orifice of your choice
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Dr. Stephen Colbert
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D
“We have a philosophy that accidents don’t just happen.”
Dan Johnsonformer manager for
government and public affairsChevron refinery
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Pre-polluted:Over 200 hazardous chemicals
perfusing every organ on day one
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134 cause cancer151 birth defects154 endocrine disruption158 neurotoxins
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Crude oils contain over a thousand different hydrocarbons and,
depending on the source of the oil, vary greatly in the relative amounts of individual hydrocarbons and trace
metal and sulfur content.
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Benzene, PAHs, heavy metals
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PAHs and other endocrine disrupting chemicals can pass through the placenta,
resulting in concentrations as high as the baby’s own sex hormones
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Regulatory agencies set safe exposure levels for chemicals by testing for effects at high concentrations, then, using statistical extrapolation to determine safe exposure levels. This method assumes that if exposure goes up so do effects and if exposure goes down so will effects. But, research is beginning to show that chemicals do not always follow this rule and may cause different effects at higher and lower levels
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“Even infinitesimally low levels of exposure indeed, any level of exposure
at all, may cause endocrine or reproductive abnormalities, particularly
if exposure occurs during a critical developmental window. Surprisingly,
low doses may even exert more potent effects than higher doses.”
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“There are no safe doses for endocrine disruptors.”
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Cialis 30 ppbPaxil 30 ppbAlbuterol 2.1ppbBirth Control 35 ppt
Text
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Oil Refinery Toxics Found in Air of Nearby Homes
Air indoors was more polluted thanthe air outdoors. “Toxic pollution from oil
refineries doesn’t stay outside; it seeps into homes.” Air in Richmond homes had
more chemicals present and at higher concentrations than in Bolinas.
Vanadium and Nickel were especially high
Brody, J.G., R. Morello-Frosch, A. Zota, P. Brown, C. Perez and R. Rudel. 2009. Linking Exposure Assessment Science with Policy Objectives for Environmental Justice and Breast Cancer Advocacy: The Northern California Household Exposure Study. American Journal of Public Health, 99: S600-S609,
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Endrocrine Hormones:maybe the most powerful
biologic agents known
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1/1,000 of previously recommended safe dosages of hormone mimickers
are now known to create genetic malfunctions and precancerous
conditions in invitro cells.
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PAHs act as:*endorcrine disruptors, i.e. may interfere with, mimic, orblock hormone production, release and activity
*development toxicants
*reproductive toxicants
Department of Health and Human Services, Public Health Service. Toxicological profile for polycyclic aromatic hydrocarbons (PAHs). Atlanta: Agency for Toxic Substances and Disease Registry, 2010. (http://www.atsdr.cdc.gov/toxprofiles/tp69.pdf.)
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Low internal doses of endocrine disruptors found in typical human populations have been linked to
obesity (Carwile and Michels 2011), infertility (Meeker and Stapleton 2010), neurobehavioral
disorders (Swan et al. 2010), and immune dysfunction (Miyashita et al. 2011), among others.
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A diverse group of scientists has reexamined this large body of literature, finding examples of low-
dose effects for dozens of chemicals across a range of chemical classes, including industrial chemicals,
plastic components and plasticizers, pesticides, phytoestrogens, preservatives, surfactants and
detergents, flame retardants, and sunblock, among others (Vandenberg et al. 2012).
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A diverse group of scientists has reexamined this large body of literature, finding examples of low-
dose effects for dozens of chemicals across a range of chemical classes, including industrial chemicals,
plastic components and plasticizers, pesticides, phytoestrogens, preservatives, surfactants and
detergents, flame retardants, and sunblock, among others (Vandenberg et al. 2012).The dose
is the
poison
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A diverse group of scientists has reexamined this large body of literature, finding examples of low-
dose effects for dozens of chemicals across a range of chemical classes, including industrial chemicals,
plastic components and plasticizers, pesticides, phytoestrogens, preservatives, surfactants and
detergents, flame retardants, and sunblock, among others (Vandenberg et al. 2012).Even tiny
doses can
be poison
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Especially
to the
youngest
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The Department of Health and Human Services, the International Agency for Research on Cancer, the National Toxicology Program, and the EPA have determined that:
Benzene is carcinogenic to humans.
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Double the risk for leukemia in the last 10 years for people living in the
vicinity of an oil refinery. Barregard L, E Holmberg and G Sallsten. 2009. Leukaemia incidence in people living close to an oil refinery. Environmental Research 109:985-990.
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Studies with pregnant animals show that breathing benzene has harmful effects on the developing fetus. These effects include low birth weight, delayed bone formation, and bone marrow damage.
American Cancer Society
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Exposure to petrochemicals, specifically benzene, gasoline, and hydrogen sulphide is significantly associated with increased
frequency of spontaneous abortion.
Xu, Xiping, Sung-Il Cho, et al.. “Association of petrochemical exposure with spontaneous abortion.” Occupational and Environmental Medicine. 55: 31-36. 1998.
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Exposure to benzene near the US permissible limit is associated with sperm aneuploidy (wrong number
of chromosomes).
Xing C, Marchetti F, Li G, et al. Benzene exposure near the US permissible limit is associated with sperm aneuploidy. Environ Health Perspect 2010;118:833-839
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Mutagenic effects theoretically can result from a single molecular DNA alteration. Regulatory
prudence has led to the use of “one-hit models” for mutagenic end points, particularly cancer, in
which every molecule of a carcinogen is presumed to pose a risk. The carcinogens of concern in crude
oil are benzene, which is present at a concentration of 1 to 6%, and polycyclic aromatic hydrocarbons (PAHs), which are present at much
lower but quite variable concentrations.
The half life of bezene is short (days) the halflife of PAHs is much longer and they can
bioaccumulate
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“Pregnant women should particularly avoid dermal contact with oil and should avoid areas with visible oil
contamination or odors.”
Bernard D. Goldstein, M.D., Howard J. Osofsky, M.D., Ph.D., and Maureen Y. Lichtveld, M.D., M.P.H.The Gulf Oil Spill N Engl J Med 2011; 364:1334-1348April 7, 2011
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Trace metals of concern:arsenic, boron, chromium,
lead and nickel
D
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Airway injury and genotoxicity persisted for over two years
Studies from the Prestige Oil Spill
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501 fishermenpersistent symptomsincreased markers of airway injurymore chromosomal damage
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Exposure Details15 days, median of 6 hours/dayprimarily younger menmost had respiratorsoccurred during the winter
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Changes in prolactin and cortisol levels suggesting endocrine disruption
Studies from the Prestige Oil Spill
Zock JP, Rodriguez-Trigo G, Pozo-Rodriguez F, et al. Prolonged respiratory symptoms in clean-up workers of the Prestige oil spill. Am J Respir Crit Care Med 2007;176:610-616
Zock J-P, Rodriguez-Trigo G, Rodriguez-Rodriguez E, et al. Long-term health effects of the Prestige oil spill (Galicia, Spain). Epidemiology 2009;20:Suppl:S242-S243
Aguilera F, Mendez J, Pasaro E, Laffon B. Review on the effects of exposure to spilled oils on human health. J Appl Toxicol 2010;30:291-301
Perez-Cadahia B, Laffon B, Valdiglesias V, Pasaro E, Mendez J. Cytogenetic effects induced by Prestige oil on human populations: the role of polymorphisms in genes involved in metabolism and DNA repair. Mutat Res 2008;653:117-123 Laffon B, Fraga-Iriso R, Perez-Cadahia
B, Mendez J. Genotoxicity associated to exposure to Prestige oil during autopsies and cleaning of oil-contaminated birds. Food Chem Toxicol 2006;44:1714-1723
Perez-Cadahia B, Laffon B, Porta M, et al. Relationship between blood concentrations of heavy metals and cytogenetic and endocrine parameters among subjects involved in cleaning coastal areas affected by the `Prestige' tanker oil spill. Chemosphere 2008;71:447-455
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Bioaccumulation and biomagnification of crude-oil components, particularly
PAHs, can occur in seafood
Lemiere S, Cossu-Leguille C, Bispo A, et al. DNA damage measured by the single-cell gel electrophoresis (Comet) assay in mammals fed with mussels contaminated by the `Erika' oil-spill. Mutat Res 2005;581:11-21
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There is no safe level of exposure to bullets
every molecule of a carcinogen is presumed to pose a risk.