hheealth effects of pesticides - the university of arizona
TRANSCRIPT
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Health Effects H Eof Pesticides
Balancing ris
sk
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Beneficial health effecP i id lPesticides pla
1) Managing crop pest/million children/year
die due to malnutrition (UNICEF).(UNICEF).
Since 1951 IndiaSince 1951, India has quadrupled grain prod ctiongrain production.
cts :l iay a role in:
ts - Approximately 15
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Beneficial health effecPesticides pla
2) Managing human an2) Managing human anvectors - Average life 1900=47 years; 2007=1900=47 years; 2007=
S ifi t i i ASpecific countries in Ayears. HIV/AIDS
d i i d l l breduction in adult labocrops. p
Herbicide use inc
cts :ay a role in: nd livestock diseasend livestock disease expectancy… US
=78=78.
Af i 2007 <40Africa 2007=<40
dor to produce
creasing.
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Beneficial health effects
5000 people di2001 d lt m thri b d2001 deltamethrine bed
75% reduction59% r d ti n59% reduction
2007 WHO ind r spr2007 WHO indoor spra30 years after p
Cockroaches and flies vorganismsorganisms
1 kille
s :
ie/day of malariat tri lnet trial
n in bites/person n in m l ri in id nn in malaria incidence
in ith DDTaying with DDTphasing it out
vector enteric disease
er of children under 5
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3) Managing critters that T i b d b– Termites, bed bugs
impact human “stuff” fi, fire ants, etc.
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A US Geological S96% of fish
% f f100% of surface w33% of major aqui
i dj
contained one or morpesticide
Gilliom et aGilliom et a51 studies1991 20011991-2001
Survey review :
waterifers
re es
l 2006l., 2006
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• 87% of urban monitoring sitesmonitoring sites had pesticides above levels ofabove levels of concern.
• Chorpyrifos and diazinon replaced with pyrethroids, now being found in urban creek sediments at levels of concern. (Environ Sci
Technol)
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• The human body i l t i t dis also contaminated:
Bl d d• Blood and urine• Average of 91
l h lA g 9industrial chemicals.
• A total of 167A 7• No occupational or
residential exposure. p• 17 pesticides or pesticid
76 were carcinogens, 947 g , 9developmental or reprod
Th l 2 2Thornton et al., 2002Mount Sinai School of Medicine 1991-2001
de breakdown products, 4 neurotoxins, and 79 , 79ductive toxins.
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Progress!• Bald eagle nesting pairs increas
from 417 to 5,748 after DDT ba- Fish & Wildlife Serv
• Organic diet significantly lowerorganophosphates in kids urine
l l h- Environmental Health Perspectiv
• The majority of new pesticide registrations are biopesticides an“reduced risk” pesticides“reduced-risk” pesticides.
– US EPA Office of Pesticide Programs AnReports
se an.
ice, 2003
rs .ves, 2005
nd
nnual
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Pestic
I i id H
Pestic
• Insecticides
• Miti id
• He
F• Miticides
• Fungicides
• Fu
• W• Fungicides
• Rodenticides
• W
• GrRodenticides
• Nematicides
Gr
• EnNematicides En
cides
bi id
cides
erbicides
i tumigants
Wood PreservativesWood Preservatives
rowth Disruptersrowth Disrupters
ndocrine Disruptersndocrine Disrupters
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Chlorpyrifos (DursbanProducts Cancellation
ENVIRONMENTAL PRO[OPP-34203J; FRL-6819Use Products CancellatiEnvironmental ProtectioACTION: Notice.
, Lorsban) End-Use Order 1/02
OTECTION AGENCY 9-6-] Chlorpyrifos; End-on Order AGENCY: n Agency (EPA).
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EPA Priority: School IPM
EPA’s Mission is to proteenvironment Since 1970environment. Since 1970for a cleaner, healthier enAmerican peopleAmerican people.
ect human health and the 0 EPA has been working0, EPA has been working nvironment for the
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EPA Priority: School IPM
The National Pesticide Pis to protect public healthby ensuring pesticides aand available for a healt•Being an effective gateway to the pes
•Focus on risk reduction, biopestipublic health product efficacy and
•Being an effective steward of existing
•Focus on a number of issues incenhancement of partnerships andenhancement of partnerships andFederal agencies; and
•PROMOTE protection through epartnershipspartnerships
Program Strategic Goal h and the environment
and alternatives are safe hy America.sticide market
icide adoption, food safety/trade and d availability
g pesticides
cluding: worker protection, d collaborations within EPA and acrossd collaborations within EPA and across
ducation; leverage voluntary
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Pesticide Environmental Stew
PESP is a voluntary progrwith pesticide users to redand environmental risks ause and implement polluti
PESP is guided by the princabsence of additional regulaabsence of additional regulaactions of pesticide users reBased on this principle, memp pcompletely voluntary.
epa.gov/pesp soon to
wardship Program - Mission
ram that forms partnerships duce the potential health associated with pesticide on prevention strategies.
ciple that, even in the atory mandates the informedatory mandates, the informed educe risk even further. mbership in the program is p p g
o be epa.gov/pestwise
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CAUTION, WARNING, DANmessage to the products handler regag p g
Strychnine AlkaloidAlkaloid
Pyripro
NGER - Signal word conveys a arding its acute toxicity.
DE &
g y
DE & Pyrethrin
Abamectin
oxyfen
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You the consYou the consneed to take aneed to take aactive role toactive role to ensure safe uensure safe upesticidespesticides
sumersumer anan
se ofse of
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IllegalP ti idPesticides
Tres Pasitosld bAldicarb
Malathion
Miraculous Chalk or Chinese Chalk is h l t h b iharmless to human beings and animals and safe to use. Deltamethrin
NaphthaleneN p
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Homo sapiens !Homo sapiens !pp
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For Use Around FoundatiLawns, Woodpiles, Storeand Fence Posts
ions, Outside Buildings, , g ,d Lumber
OUTDOORUSE ONLY
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Use pesticides only wselective when you
HAZARD = Toxiselective when you
HAZARD Toxi
risk; the potential
the capacpesticidep
for injurypesticide cause inj
when necessary & be choose a product
city x Exposurechoose a product
city x Exposure
the risk of a pesticide
city of a to pesticide
contacting or entering the
to ury
gbody
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High toxicityHigh toxicityLow exposure rp
H
yy,risk
Low toxicity,Low toxicity,igh exposure riskg p
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How do pesticideH p
•Skin (dermal)L ( h l )•Lungs (inhalation)
•Mouth (oral)Mouth (oral)•Eyes
es enter the body?y
97% of all body97% of all body exposure during
spraying is by skinspraying is by skin contact!
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Different parts of the bb bto absorb p
S l 32%Scalp 32%
Ear Canal 40%Ear Canal 40%
AbdAbdomen 18%Genital Area 100%
ll
Genital Area 100%
Ball of Foot 13%
body vary in their ability i idpesticides.
F h d 36%Forehead 36%Armpit 64%Forearm 9%Palm 12%Back of Hand 21%
Palm 12%
Percent DoseAbsorbedA
Chemical -parathionMaibach 1974
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Greater derm•Warm, moist areas: g•Cuts, abrasions, and•Pesticide formulationP
Least Labsorbed
mal absorptionpgroin, armpits, head, neckd rashesns affect absorptionp
Most b b dabsorbed
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Routes of EntryRoutes of EntryInhalation exposure can oI p
• When usingW bl dWettable powdersDustsGGases, vapors Sprays
Whil i i d l di• While mixing and loading• During applications
: Lungs (inhalation): Lungs (inhalation)occur:
g
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Fumigants are F gactive as gases!
P t t lfProtect yourself from inhalation
exposure!
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This is not ann effective respirator…
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Routes of E
Eyes are able to Eyabsorb surprisingly large amounts oflarge amounts of chemical
Entry: Eyes
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Wash your y...before eating, drinkingg gsmoking, or going to the
bathroom at breaks!!
hands!g g
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10 newborn babies
Analysis of cord blood sampl• pesticides• heavy metals• plastics• flame retardants
i d f i• stain- and grease-proof coatin
Average number/newbornAverage number/newborn
L t 154Lowest = 154
Born in U.S. hospitals
les for 413 chemicals:
287 ere287 were isolated
ngs
= 200 identified chemicals= 200 identified chemicals
Hi h t 231Highest = 231
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Perfluorochemicals PesticPerfluorochemicals (PfTetra-pcb
Nona-pcb
Pentach
Heptachlorinated Dioxin Perfluorinated Carboxylic Acid
Polyaromatic Hydrocarbon Trichlorinated Naphthalene
Hexachlorinated Naphthalene
Heptachlorinated Na
Heptabrominated Furan Perfluorinated
Nonabrominated Diphenyl EtheDichlorinated Naphthalene
Polybrominated Diphenyl Ethers
Hexachlorinat
Tetrabrominated Diphenyl Ether
Pentachlorinated Naphthalene
Brominated Dioxins & Furans Hexabrominated Dioxin
Chlorinated Dioxins
Polybrominated DiHexa-pcb
Metals (Lead, Mercury, Arsenic, Etc.) Chlorinated Dioxins
Chlorinated Furans
DePenta-pcb
Octa-pcb
Polychlorinated Naph
Heptachlorinated Furan Heptabrominated
Octabrominated Diphenyl Ether
Hepta-pcb
p
Chlorinated Dioxins & Furans cides Pentachlorinated Furan fcs)
Tri-pcb
Polychlorinated Biphenyls hlorinated Dioxin
Tribrominated Diphenyl Ether
Mono-pcb aphthalene
Polyaromatic Hydrocarbons
Tetrabrominated Furan
Sulfonate
Tribrominated Diphenyl Ether
er
Tetrachlorinated Naphthalene
Brominated Furans ted Furan Di-pcb
Deca-pcb Octachlorinated Naphthalene
Pentabrominated Furan
Hexachlorinated Dioxin
Octachlorinated Dioxin
iphenyl Ether Dibrominated Diphenyl Ether
Hexabrominated Furan ecabrominated Diphenyl Ether
Monochlorinated Naphthalene
hthalenes Brominated Dioxins
Pentabrominated Diphenyl Ether
Hexabrominated Diphenyl Ether Diphenyl Ether
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Effects of mul icumulative
toxicants andtoxicants and synergisticsynergistic
UNKN
ultiple and/orexposures to their potentialtheir potentialeffects areeffects are
NOWN
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Food
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Fo
Study: 76 jars of baby food fromPhiladelphia, and San Francisco w
i id idpesticide residues:• 53% had one pesticide • 18% h d t r m r p ti id• 18% had two or more pesticid• Fruits had up to five different
od EWG: Pesticides in Baby Food
USDA, 2004
m grocery store shelves in Denver, were analyzed for a panel of
USDA, 2004
ddest pesticide residues
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“Organic Diets SiChildren’s DietaOrganophospho
Recruited 23 children, 3-11 yearexclusively con
Urine samples collected for 15 consecutive days
organorgan(
ignificantly Lower ary Exposure to orus Pesticides”
s old from Seattle, WA, who ate nventional diets
Introduced an organic diet
Samples analyzed for two nophosphorus (OP) metabolitesnophosphorus (OP) metabolites (Malathion & Chlorpyrifos)
Chensheng Lu, et. al
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Three Phase Study
Phase I: Days 1-3
Usual Conventional Diet
Phase II: Days 4-8
S bstit ted Organic DietSubstituted Organic Diet
Phase III: Days 9-15
Resumed Conventional DietResumed Conventional Diet
23/23 children had OP metabolites present
OP metabolites decreased immediately to an
d bl l lundetectable level
OP m t b lit d t t blOP metabolites detectable immediately after reintroduction of conventional diet
Chensheng Lu, et. al
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Concl
“Organic diet proviOrganic diet proviimmediate protective e
t h hto organophosphorucommonly used in agr
lusion
ides a dramatic andides a dramatic and effect against exposure
ti id th tus pesticides that are ricultural production.”
Chensheng Lu, et. al
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www.foodn
• 46 popular fruits & vegetable• Based on analysis of over 100• Data obtained by U.S. Govern
news.org
s0,000 tests for pesticidesnment
Environmental Working GroupEnvironmental Working Group
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www.foodnews.org
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‘Latency’ &
Certain diseases, such asl i dlatency periods
The earlier theThe earlier theearlier the latenc
Chilhave more t
environmentally-ywith long lat
& Disease… Mount Sinai School of Medicine
s cancer, have long
e exposure thee exposure, the cy period begins:
ldren time to develop -triggered diseases ggtency periods
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Hypospadias
CONGENITAL
Hypospadias
CONGENITAL DEFECTS
Brain Testicular
CANCER
Leukemia Lymphoma
Autism Spectrum DisorderDisorder
BEHAVIORALBEHAVIORAL DISORDERS
Attention Deficit Hyperactivity yp y
Disorder
ASTHMA
Mount Sinai School of Medicine
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Insecticides and Hearin
1 15
1.2
1.11.15
Rat
io
1
1.05
Odd
s R
0.9
0.95
none lownone low
(lifetime exposureinseinse
J. Mac Crawford et al. 2008. Hearing Loss amonAgricultural Health Study. J Occup Environ M
ng Loss
medium highmedium high
e to organophosphate cticides)cticides)
ng Licensed Pesticide Applicators in the ed. 50(7):817–826.
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Herbicides and ChCancerThe etiology of childhood brain childhood brain cancer remains largely unknown largely unknown.
S l di h Several studies have suggested associationwith parental pesticid
hildhood Brain
s de use.
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Herbicides and Childh2
Rat
io
1
Odd
s R
0never used
lawn/garden
Youn K. Shim et al. 2009. Parental Exposure to United States Atlantic Coast Childhood Brainpress.
hood Brain Cancer
usedn herbicides
Pesticides and Childhood Brain Cancer: n Cancer Study. Environ Health Persp in
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Pesticides and ParkinParkinson’s disease patients whpesticides through their work shp
French farm-workers have doubd t ti id ith dexposed to pesticides, with a do
years of exposure.
Looking at insecticides, fungicidworkers who used insecticides hrisk of Parkinson’s disease.
http://www.beyondpesticides.odyou/Spring%202008/parkinso
nson’s Diseaseho have been exposed to how elevated rates of disease.
ble the risk for the disease if ff t f th b fose-effect for the number of
des and herbicides, farm-had > two-fold increase in the
org/infoservices/pesticidesanonscited.pdf
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Pesticides and PancreEPTC is a selective thioc
1 61.8
EPTC is a selective thioc
1.21.41.6
atio
0 60.8
1
Odd
s R
a
0.20.40.6O
0never usedherbicide
Gabriella Andreotti et al. 2009. Agricultural pesAgricultural Health Study Cohort. Int. J. Canc
eatic Cancer –arbamate herbicidearbamate herbicide
used EPTC
sticide use and pancreatic cancer risk in the cer 124: 2495–2500.
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Pediatric Acute LymphobE t P ti idExposure to Pesticides
Organophosphates have bp pof the risk factors for acute lymphoblastic y pleukemia.
More case mothers (33%) than controls (14%) reported usinginsecticides in the home.
blastic Leukemia and
been hypothesized as one yp
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Groups Warn: New Food Pesticide DangeAmericans (01/03/06)
French Study Shows Household Pesticides French Study Shows Household Pesticides
New Study Shows GreaterNew Study Shows Greaterthan Predicted (03/07/06)
Research Finds Exposure to Low Levels of pPesticides Increases Risk of Cancer (03/20/06)
erous for All
May Increase Leukemia (1/24/06)May Increase Leukemia (1/24/06)
r Vulnerability to Pesticides r Vulnerability to Pesticides )
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“Woman pWoman pgarlic g c
Rosemary ospontaneouspontaneou
Pesticides kill,i idpesticides c
oisoned byoisoned by spray”sp y
oil can cause us abortionus abortion
, even botanical b ican be toxic
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The National Academy of report
Pesticides in theCh ldChildren
estimate
of lifetimed i thduring the
Sciences 1993 landmark
he Diets of Infants and
es that
50%e pesticide exposure occurs
fi t fi f life first five years of life…
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CHILDRENO
LITTLE ALITTLE AChildrenChildren
1) Growing &
Greater Metabolic DemandsAnatPhysioDiffe
EN ARE OTADULTSADULTS…n are stilln are still
& 2) Developing
Behavior Differencesomic & ological erences
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Metabolic DifferenDi t & Di t R i tPer Unit of Body Weight:Diet & Dietary Requirement
Children eat more fA newborn requireA newborn requirekcal/kg/day
A d lAn adult man requkcal/kg/day
A 1 year old infantas many calories pey pthan an adult.
ces:t G tts are Greater
food than an adultes about 140es about 140
buires about 43
t consumes three times er unit of body weight y g
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Metabolic DifferenFl id R i t GPer Unit of Body Weight:
Fluid Requirements are Gre
Children drink more fluids th
The average newbornbreast milk or formula
hweight.Foeqqof
nces:teater
han adults
n consumes about 5 oz of per kilogram of body p
or the average adult male, this is quivalent to drinking 30 12 oz. cans q g
soda per day!
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Metabolic DifferenOxygen Requirements are G
Children breath more air thaPer Unit of Body Weight:
O yg R q G
Children breath more air thaNewborn: 60 breaths/ min.
Child 1-435 breath>
A newborn’s minute ventilation is approximately 400mL/min/kg >
Children also breath different air adults!
pp y L/ / g
adults!The breathing zone for an atypically 4 to 6 feet above thfloor
ces:Greater
n adults
G
n adults4 years old:
s/ min.Adult: 20 breaths/ min.>
An adult’s minute ventilation is approximately 150mL/min/kg>
than
pp y 5 L/ / g
dult is he The breathing zone for a child dependsThe breathing zone for a child depends on their height and mobility…
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Anatomy & Physiolo
Children have:Distribution & Clearance ofChildren have:
Higher proportion of T
b f kH
Less body fat/kg
oRenal clearance varies by ag
May lead to highertoxins or their metatoxins or their meta
ogy Differences:f Toxins are Different
Total Body Water/kg
Higher circulating levels f li h li ti idof lipophylic pesticides
ge
r levels of abolitesabolites
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Anatomy & PhysioloDi t ib ti & Cl f
Organs & tissues (inc
Distribution & Clearance of
Organs & tissues (incsystem, kidneys, liver, system) continue to dythroughout infancy, cadolescence…
Differentiatre fte thare often th
susceptible to
ogy Differences: f T i Diff t
cluding the central nervous
f Toxins are Different
cluding the central nervous lungs, eyes, reproductive
differentiate and mature childhood, and, in some cases,
ting tissues e MOSTe MOST o toxic insult
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Example: The DeveloNeuronal developmentrapidly during the firstp y g
The blood-brain barrichemicals access to theThe brain continues tothroughout childhood a
chemicals access to the
throughout childhood a
Disruption of thisDisruption of this
profoundon essential elemen
oping Brain… Claudio, et. al.
t, migration, and myelination occur t 2 years of lifey
ier is ‘leaky’, allowing brain
o markedly develop and growand adolescence
brain
Bearerand adolescence
s process can haves process can have
d effectsnts of development
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Dose makesDose makesEsse ti l it mi sEssential vitamins
in high quantitiesg qPesticides P
ppm or pp
Hormones are activthe parts-per-trilli
s the poisons the poisonc be toxic can be toxic e.g. Vit A.gcan be present in p
pb in our bodies.
ve in our bodies in ion (ppt) range.
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TobaccoTArgues to this d
l“no conclusive sthat smoking causes c
Sued the Environmentathe mid 1990’s to remthe mid-1990 s to rem
cigarette packaging thacause c
Does not label packagpnations because of
o IndustryI yday that there is
f fscientific proof”cancer or lung disease
al Protection Agency in move the statement onmove the statement on at passive smoking can cancer
ging exported to other l k
pf this ‘lack of proof’
Landrigan et. al.
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CHRONIC
Effects of SUBACUTE/CHRONIC exposure of neurotoxic pesticides on
developing neurons aredeveloping neurons are UNKNOWN
EfINTERA
pesticidSilent pesticid
Toxicity
ACUTEACUTE
ACUTE POISONINGSACUTE POISONINGSwith pesticide neurotoxins are
commonly encountered & well described
ffects of MULTIPLE ACTIONS between neurotoxic des over time on developingdes over time on developing
neurons are UNKNOWN
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Thanks toJonathan Lee-Melk
Tom GreenM LMarc Lame
Don B umg rtnerDon BaumgartnerTim StockTim Stock
Carrie FossSherry Glick