What Is Cancer?
There are
some people who believe that Native Americans do not get cancer as much as
the other populations of the United States. However, this is not the
case. According to the Native
American Cancer Research website, cancer has become the third highest cause
of death among Native Americans. But what is cancer? To
answer that, we must take a cellular look at the human body.
Happy Helping Cells Losing Control
Within a population of cells, you can observe cells living, working, and meeting
the needs required by a human. After some time, the cell will divide
and replace itself so that a balance is maintained within the body (Fig.
1). However, an abnormal cell does not follow these guidelines, but
rather divides at an accelerated rate. This fast growing “bunch” of
cells is what we may consider a tumor (Fig 2).
The Role of Contact Inhibition
However, just because our cells divide rapidly does not necessarily mean
they cause a problem. Tumors can
be benign, meaning that they have grown, but are not spreading and
causing health problems. A
problem arises when fast-growing cells to not abide by contact
inhibition.
When a group of cells come close together, signaling will occur among
them, and growing will stop—this is contact inhibition.
Cancerous cells do not abide by contact inhibition, but continue to grow, and
invade neighboring spaces within the body (Fig 3). This continuing
invasion is what causes health problems. As these wild cells grow, they
take up nutrients, but do not provide any beneficial support to the
surrounding tissues or organs and may instead prevent your body from working
properly. Tumors that invade and harm an individual are termed malignant.
Spreading of the Cancer Cells
Over time this invasion, termed neoplasia, may result in the spreading of
the cancerous cells. At a certain point in the development of a tumor, metastasis,
or the spreading of the cancerous cells, can occur, thus making the condition
more serious (Fig 3). Once the cancerous cell has spread and
“implanted” in another organ or tissue, the same cycle continues until, once
again, metastasis occurs. Often times, the outcome of whether the
patient will survive the struggle against cancer depends on when cancer is
first detected and addressed.
Where We Are Today
Today, there is a great deal of research aimed at preventing and treating
various cancers. Despite our best efforts, the fight against cancer continues
to this day. Recently, it has been found that cancer rates overall in the
United States have declined. However, it is still imperative that the
proper mindset of prevention and early detection be considered. Right
now, the best advice on cancer is to maintain a proper diet and exercise
routine to avoid what can be a dangerous life situation.
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Fig 1. An example of normally
dividing and unique cells that
work with the body.

Fig. 2 An example of normal cells of the
body
transforming into mean, ugly
cancer cells. Cha-hey!

Fig. 3 What cancer can look like and
what the cells can do. Click on the picture
to take a bigger look and for
more information.
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