Impact of pesticides

1. Hazards of Pesticides
Ahmed Mushtaq
20012514-001
Presented to
Dr Sumera Afsheen

2. Pesticides are killing people,
wreaking havoc on our
environment, and harming
wildlife
Hazards

3. Food crops compete with 30,000
species of weeds, 3,000 species of
worms and 10,000 species of
plant-eating insects.
Bugs, molds and rodents can all
cause damage in storage.
Production of major crops has
more than tripled since 1960
Importance

5. Human Health
Immediate Chronic (Long Term)
• Irritation of the nose,
• Throat, and skin causing
burning,
• Stinging
• Itching as well as rashes
and blisters.
• Nausea, dizziness and
diarrhea
Include cancer and other tumors; brain and
nervous system damage;
birth defects; infertility and other
reproductive problems;
damage to the liver, kidneys, lungs and
other body organs.
Chronic effects may not appear for weeks,
months or even years after exposure,
making it difficult to link health impacts to
pesticides.

6. In many cases, symptoms of pesticide
poisoning mimic symptoms of colds or
the flu.
Misdiagnosed and under-reported.
Doctor might not even think to ask about
pesticide exposure.

7. Disruption of the female
hormonal function
1. Interference with hormone synthesis
Some pesticides, such as fenarimol, prochloraz, and other imidazole fungicides possess the ability to inhibit
estrogen biosynthesis
2. Interference with hormone transport and clearance
3. Interference with hormone receptor recognition and binding
4. Interference with the thyroid function
5. Interference with the central nervous system

8. Disruption on the female
reproductive system
The function of the female
reproductive system
depends upon hormone
concentrations and their
balance. Endocrine
disruption may result in
disturbances in the
reproductive system, such
as modulation of hormone
concentrations, ovarian
cycle irregularities

9. Menstrual cycle
disturbances
Women who currently
used pesticides
experienced longer
menstrual cycles
increased odds of
experiencing long cycles,
missed periods, and
intermenstrual bleeding
compared with women
who had never used
pesticides.

10. A number of studies reported that among
women occupationally exposed to pesticides
and/or working in the agricultural sector the
risks of spontaneous and stillbirth seemed to
be significantly increased
StillBirth(20th gestation week)
Spontaneous
abortion/stillbirth

11. Developmental
defects
orofacial clefts
hypospadias
opening of the urethra is not located at the
tip of the penis
spina bifida
limb reduction defects
otal anomalous venous return
oxygen-rich blood does not return from the
lungs to the left atrium. Instead, the oxygen-
rich blood returns to the right side of the heart.

12. pesticide poisoning are at increased
risk of psychiatric disorder.
Stress
Anxiety
Depression
Suicidal attempt
Psychic Disorder

13. Pesticides are toxic chemicals designed to be
deliberately released into the environment.
Pesticides easily contaminate the air, ground and water
when they run off from fields, escape storage tanks,
Environment

14. In the United States, pesticides were found to
pollute every stream and over 90% of wells
Pesticides can be found in rain, ground
water, streams, rivers, lakes and oceans.
•it can drift outside of the area of where it
•it can leach through the soil,
•it can be carried as runoff,
•or it may be spilled accidentally.
Water Pollution

15. Pesticides can contribute to air
pollution. Pesticide drift occurs when
pesticides suspended in the air as particles
are carried by wind to other areas, potentially
contaminating them
Air pollution

16. The extensive use of pesticides in
agricultural production can degrade and
damage the community of microorganisms
living in the soil, particularly when these
chemicals are overused or misused as
chemical compounds build up in the soil
Soil

17. Pesticides can kill bees and are strongly implicated in pollinator
decline, the loss of species that pollinate plants, including through
the mechanism of Colony Collapse Disorder, in which worker
bees from a beehive or western honey bee colony abruptly
disappear. Application of pesticides to crops that are in bloom can
kill honeybees, which act as pollinators.
Pollinators

18. Animals may be poisoned by pesticide residues that
remain on food after spraying. An application of
pesticides in an area can eliminate food sources that
certain types of animals need, causing the animals to
relocate, change their diet, or starve. Poisoning from
pesticides can even make its way up the food chain
Wildlife

19. birds are being harmed by pesticide use.
loss of several bird species due to accumulation of
pesticides in their tissues.
Types of fungicides used in farming are only slightly
toxic to birds and mammals, but may kill off earthworms,
which can in turn reduce populations of the birds and
mammals that feed on them
Mao Tse-tung
Birds

20. Application of herbicides to bodies of water can cause
plants to die, diminishing the water’s oxygen and
suffocating the fish. Repeated exposure of some
pesticides can cause physiological and behavioural
changes in fish that reduce populations, such as
abandonment of nests, decreased immunity to disease,
and increased failure to avoid predators.
Aquatic Life

21. Conclusion
Human Loss
Alternative way
Business mafia

22. 1. Air and Pesticides (orst.edu)
2. Pesticide exposure: the hormonal function of the female reproductive
system disrupted? | Reproductive Biology and Endocrinology | Full Text
(biomedcentral.com)
3. Impact of pesticides use in agriculture: their benefits and hazards - PMC
(nih.gov)
4. Pesticides in our Environment - Pesticide Action Network UK (pan-uk.org)
5. Environmental impact of pesticides – Wikipedia
6. Pesticides and Water Pollution — Safe Drinking Water Foundation
(safewater.org)
7. https://www.sciencedaily.com/releases/2019/07/190702152806.htm