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Health Information
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Saturday, November 22, 2008
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Find
more information about this topic from either the Web or the world's best
medical journals by using the search boxes at the top of this page.
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Introduction
You may have asked
for, or been given, this booklet because you have a higher
risk for a certain type of cancer than most people, or you
may want to learn about ways to prevent cancer. There are
two types of prevention clinical trials that study ways to
reduce the risk of getting cancer:
- Action studies
(doing something) These focus on finding out whether
actions people take, such as getting more exercise or quitting
smoking, can prevent cancer.
- Agent studies
(taking something) These studies (also called chemoprevention
studies) focus on learning whether taking certain medicines,
vitamins, minerals, or food supplements can prevent cancer.
This online booklet is for people who want to learn more about
agent studies designed to prevent cancer. When "cancer
prevention trials or studies" are mentioned in this
booklet, they refer only to agent studies. If you want to learn
more about other types of clinical trials, including other types
of prevention studies, the resources page can help you.
The online booklet
explains what prevention clinical trials are, how they work,
and why they're done. This can help readers decide whether
taking part in a cancer prevention clinical trial is right
for them.
Back
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National
Cancer Institute
April 1999
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