Cancer is out-of-control cell growth, usually leading to tumors. The cancer is very
serious if the tumor begins to spread (metastasize) throughout the body.
There are many different types of cancer. They are named based on where the tumor
is located or where it first started growing. The most common forms of
cancer are colon, lung, breast, and prostate.
What Causes Cancer?
Normally, the body makes new cells only when they are needed for growth or repair.
This cell growth is controlled by a group of genes that work together. When one or
more of these genes is damaged (mutated), cells can keep growing and dividing, leading to cancer.
Genes can be mutated by chemicals in the environment, like tobacco smoke.
But more often, damage to growth-control genes occurs spontaneously in a single gene.
That's why a tumor is typically found (or at least begins) in
just one spot.
Who's At Risk?
Most people who develop cancer have no family history of the disease, meaning their
cancer was probably not inherited. But sometimes the more common cancers (e.g., breast,
prostate, and colon) can run in families. If a close relative (grandparent,
parent, or sibling) has been diagnosed with a common form of cancer, you too may
be at risk. Your risk increases if the relative developed cancer at an early
age (typically before age 50-55), or if more than one close relative developed the
Reducing The Risk
The best ways to reduce cancer risk may differ slightly for each type of cancer.
But here are some general guidelines to follow:
Do not use tobacco products; avoid excessive alcohol consumption.
Perform regular self-examinations.
See your doctor for periodic screenings (mammograms, colonoscopies).
If cancer runs in your family, discuss this information with your doctor.
Maintain a healthy body weight.
Eat a diet that is high in fiber (whole grains, fruits, vegetables).
Genetic Science Learning Center. (2013, September 1) Cancer.
Retrieved June 26, 2017, from http://learn.genetics.utah.edu/content/history/cancer/
Cancer [Internet]. Salt Lake City (UT): Genetic Science Learning Center; 2013
[cited 2017 Jun 26] Available from http://learn.genetics.utah.edu/content/history/cancer/