Transcript Causes of Cancer

Causes of Cancer
By: Areana Eckman
Valerie Hart
Ashley Schuld
Brandon Meade
What is Cancer?
• Cancer is a class of
diseases characterized by
out-of-control cell growth.
• Cancer harms the body
when damaged cells divide
uncontrollably to form
lumps or masses of tissue
called tumors.
• Tumors that stay in one
spot and demonstrate
limited growth are
generally considered to be
benign.
What causes cancer?
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Tobacco
Sunlight/Tanning
Alcohol
Poor diet, lack of physical
activity
Family history of cancer
Certain hormones
Growing older
Sexual activity
Infections
Viruses & bacteria
Environmental exposure
Tobacco
Some of the chemicals that could cause cancer are:
• Arsenic
• Benzene
• Beryllium (a toxic metal)
• Butadiene (a hazardous gas)
• Cadmium (a toxic metal)
• Chromium (a metallic element)
• Ethylene oxide
• Nickel (a metallic element)
• Polonium-210 (a radioactive chemical element)
• Vinyl chloride
Other toxic chemicals in tobacco smoke are suspected to cause
cancer, including the following:
• Formaldehyde
• Toluene
Sunlight
Some of the ultraviolet rays from the sun sink
past the o-zone and into our skin. Skin cancer is
caused from the sun, usually from sunbathing,
tanning, or using a tanning bed.
Alcohol
Having more than two drinks each
day for many years increases the
chance of developing cancers of the
mouth, throat, esophagus, larynx,
liver, and breast.
For most of these cancers, the risk
is higher for a drinker who uses
tobacco.
Poor diet, lack of physical activity
People who have a poor diet, do not have
enough physical activity, or are overweight may
be at increased risk of several types of cancer.
Most cancers develop because
of mutations in genes. Factors
in a person's lifestyle or
environment can cause such
changes in certain types of
cells.Some gene changes that
increase the risk of cancer are
passed from parent to child.
However, certain types of
cancer do occur more often in
some families than in the rest
of the population. However,
environmental are also
involved. Most of the time,
multiple cases of cancer in a
family are just a matter of
chance.
Family History
People believe that the estrogen is
responsible for the causes of breast
cancer.
Estrogen is a general term for
female steroid sex hormones that
are secreted by the ovary and
responsible for typical female sexual
characteristics.
For years, estrogen has been a
suspected carcinogen, since strong
epidemiological evidence associates
the hormone to breast, endometrial,
and uterine cancers.Women who
begin menstruating early, or who
start menopause late, produce more
estrogen over their lifetimes and
have a higher risk of breast cancer.
Hormones
Growing Older
The most important risk factor for cancer is
growing older.
Most cancers occur in people over the age of 65.
But people of all ages, including children, can get
cancer, too.
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Human papillomaviruses / HPV infection is the main cause
of cervical cancer.
Hepatitis B and hepatitis C viruses: Liver cancer can
develop after many years of being infected with hepatitis B or
hepatitis C.
Infections
Human T-cell
leukemia/lymphoma virus (HTLV1): Infection with HTLV-1 increases a
person's risk of lymphoma and
leukemia.
Infection is what happens when
germs (also
called microbes or microorganisms)
enter the body, multiply, and cause
illness. The main types of germs are
bacteria, viruses, protozoa
(parasites), and fungal organisms
(also called fungi).
Lung cancer is a disease which
consists of uncontrolled cell growth
in tissues of the lungs.
Viruses can help to cause some
Cancer bacteria are
cancers. But this does not mean
bacterial infectious
that these cancers can be caught
organisms that are known like an infection. What happens is
or suspected to cause
that the virus can cause genetic
cancer. There is some
changes in cells that make them
evidence that bacteria
more likely to become cancerous.
may be directly
carcinogenic.
Environmental Exposure
Steps to prevent cancer...
• Avoid smoking and exposure to
smoke
• Stay out of the Sun for long
periods of time
• NO tanning beds
• Eat fruits & vegetables
• Eat foods high in antioxidants
• Limit red meat and animal fat.
• Limit your alcohol usage
• Exercise
• Know your environment
• Practice safe sex
• No multiple sex partners
• Get check ups at your doctors
appointments
Works Cited Page
• http://www.medicinenet.com/cancer_causes/article.htm
• http://www.cancer.gov/cancertopics/cancerlibrary/what-iscancer
• http://www.cancer.org/Treatment/TreatmentsandSideEffects
/
PhysicalSideEffects/InfectionsinPeoplewithCancer/infectionsin-people-with-cancer