This document discusses electromagnetic fields (EMF) and their applications and effects. It begins by defining EMF and providing examples of its benefits in areas like communications, medicine, and technology. It then discusses concerns about EMF exposure from power lines and research showing links between EMF and cancer. The document reviews epidemiological studies on childhood leukemia and EMF exposure and limits set for human RF exposure. It examines biological effects of EMF like changes to cells and tissues. In the end, it provides case studies on EMF-related cancer and recommends safety measures like distancing devices and grounding to reduce EMF exposure.

1. M.KUMARASAMY COLLEGE OF ENGINEERING
(AUTONOMOUS)
KARUR.

2. PAPER PRESENTATION
Presented by,
S.GOKULNATH
P.K.GURUPRAKASH

3. EMF IN MEDICINE

4. WHAT IS ELECTROMAGNETIC
FIELD?(EMF)
• An electromagnetic field is physical field
produced by electrically charged objects. It
affects the behaviour of charged objects in the
vicinity of the field . The electromagnetic field
extends indefinitely throughout space and
describes the electromagnetic interaction.

6. BENEFIT OF EMF
During the last 120 years, the biosphere has
been exposed to increasing number and
variety of EMFs related to industrial methods
for generating electricity and further
innovations in
technology,communication,transportation,
home equipment, and education.....

7. EMF IN ALL AREAS

8. APPLICATIONS OF EMF
Satellite communications
Television communications
Wireless communications
Mobile communications
Microwave communications

9. THERAPEUTIC APPLICATIONS

10. THE ISSUE IN EMF
Power line pass through residential areas
Concerns related to resulting electromagnetic
fields
Central questions-does power line EMF cause
cancer?.

11. EMF SAFTEY ASSUMES EMF RESEARCH SHOWS
0nly ionising radiation cause chemical
change.
Non ionising EMF also cause chemical
changes.
EMF cell damage is only caused by
heating.
EMF cell damage occurs heating.
Safe EMF limits can be set in terms of
heating rate(SAR).
Non-thermal EMF effects occurs below
the safety limit.
EMF limits can be set separately for each
EM spectrum subdivision.
Biological reactions are stimulated across
spectrum and effects may be additive
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12. STUDYING HEALTH IMPACTS
Epidemiology
- correlation, qualitative relation
- dose –response, quantitative relation
Laboratory research
- mechanism, scientific plausibility

13. EPIDEMOLOGICAL STUDIES
University of Colorodo study -1979
Children living near power lines twice as likely
to develop cancer than other
First to exposure the issue to the public
Criticized for lack of actual field
measurements

14. EPIDEMIOLOGY OF CHILDHOOD
LEUKEMIA
EMF rapid report to congress (1999)
‘EMF....not entirely safe....minimize exposure to
magnetic fields....’
Epidemiology threshold for childhood leukemia is
3-4mG
IARC-international Agency for Research on
Cancer(2002)
exposure to electric and magnetic fields (EMF) is
possible cause of cancer

18. LIMITS FOR HUMAN RF
A biological effect occurs when exposure to
electromagnetic fields causes some noticeable or
detectable physiological change in biological
system.
An adverse health effect occurs when the
biological effect is outside the normal range for
the body to compensate.
In the RF region thermal effects are the stablished
harmfull effect.
Only replicated studies can be scientific basis of
exposure standards.

19. RF EXPOSURE LIMITS AND SAFETY
MARGINS
The rationale for local SAR limit and averaging
mass is implicitly based on exposure effects
(thermal)on eye with a safety factor of 50.

21. EXPOSURE FROM MOBILE PHONE

22. EMF IN BIOEFFECTS?
A biological effect occurs when a change in
environment causes some noticeable or
detectable physiological change in living system.
These changes are not necessarily harmful to
health. eg: listening,reading, eating or will
produce a range of bioeffects. However,
none of these activities is expected cause health
effects.
The body has sophisticated mechanisms to adjust
to the various influences that encounter in the
environment.

23. BIOLOGICAL AND HEALTH IMPACTS
Cell membranes
Tissues
Change in protein conformation
Changes in binding probability
Absorption of vibrational states of biological
components
Genetic material
Cancer
Brain and nervous system

24. EFFECT OF TEMPERATURE ON
BIOLOGICAL TISSUES

25. EFFECTS THAT MAY LEAD TO CANCER
DUE TO EMF EXPOSURE

26. EMF IN MEDICAL APPLICATION
Physical regulation in bone repair
Magneticfields of pain control
In plastic surgery
In cartilage
Reconstruction surgical producers
Treatment of malaria............

27. SOME CASE STUDIES
11 0f 65 workers on 1st floor of a telephone
company developed cancer from the electric
equipment housed in the room adjacent to
their office
Children whose mother had used electric
blankets during pregnancy showed a 300%
increases in brain tumors

28. SAFETY MEASURES
Keep your cell phones and computer at a
distance when possible
Avoid bluetooth headsets and use
speakerphone instead
Try earthing
Unplugging applications not in use
Eat a healing diet
FOOD IS MEDICINE....

29. THANK YOU